Home / 13,122,587.20-19,683,880.80-8,315,998.60

Finding the Fourth Proportional to 13,122,587.20, 19,683,880.80 and 8,315,998.60

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Solution

The fourth proportional to 13,122,587.20, 19,683,880.80 and 8,315,998.60 is: 12,473,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,587.20 : 19,683,880.80 = 8,315,998.60 : x
  2. Step 2: Convert to fraction form
    13,122,587.20/19,683,880.80 = 8,315,998.60/x
  3. Step 3: Cross multiply
    13,122,587.20x = 19,683,880.80 × 8,315,998.60
  4. Step 4: Simplify right side
    13,122,587.20x = 163,691,125,175,366.88
  5. Step 5: Solve for x
    x = 163,691,125,175,366.88/13,122,587.20
  6. Step 6: Final answer
    x = 12,473,997.90

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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.