Home / 15,116.57-20,860.50-8,402.13

Finding the Fourth Proportional to 15,116.57, 20,860.50 and 8,402.13

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Solution

The fourth proportional to 15,116.57, 20,860.50 and 8,402.13 is: 11,594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.57 : 20,860.50 = 8,402.13 : x
  2. Step 2: Convert to fraction form
    15,116.57/20,860.50 = 8,402.13/x
  3. Step 3: Cross multiply
    15,116.57x = 20,860.50 × 8,402.13
  4. Step 4: Simplify right side
    15,116.57x = 175,272,632.87
  5. Step 5: Solve for x
    x = 175,272,632.87/15,116.57
  6. Step 6: Final answer
    x = 11,594.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.