Home / 10,208.03-15,381.50-8,399.70

Finding the Fourth Proportional to 10,208.03, 15,381.50 and 8,399.70

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Solution

The fourth proportional to 10,208.03, 15,381.50 and 8,399.70 is: 12,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,208.03 : 15,381.50 = 8,399.70 : x
  2. Step 2: Convert to fraction form
    10,208.03/15,381.50 = 8,399.70/x
  3. Step 3: Cross multiply
    10,208.03x = 15,381.50 × 8,399.70
  4. Step 4: Simplify right side
    10,208.03x = 129,199,943.55
  5. Step 5: Solve for x
    x = 129,199,943.55/10,208.03
  6. Step 6: Final answer
    x = 12,656.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.