Home / 13,120,803.40-19,681,205.10-8,055,689.80

Finding the Fourth Proportional to 13,120,803.40, 19,681,205.10 and 8,055,689.80

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Solution

The fourth proportional to 13,120,803.40, 19,681,205.10 and 8,055,689.80 is: 12,083,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,803.40 : 19,681,205.10 = 8,055,689.80 : x
  2. Step 2: Convert to fraction form
    13,120,803.40/19,681,205.10 = 8,055,689.80/x
  3. Step 3: Cross multiply
    13,120,803.40x = 19,681,205.10 × 8,055,689.80
  4. Step 4: Simplify right side
    13,120,803.40x = 158,545,683,175,778
  5. Step 5: Solve for x
    x = 158,545,683,175,778/13,120,803.40
  6. Step 6: Final answer
    x = 12,083,534.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.