Home / 26,121.60-39,124.80-15,715.20

Finding the Fourth Proportional to 26,121.60, 39,124.80 and 15,715.20

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Solution

The fourth proportional to 26,121.60, 39,124.80 and 15,715.20 is: 23,538.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,121.60 : 39,124.80 = 15,715.20 : x
  2. Step 2: Convert to fraction form
    26,121.60/39,124.80 = 15,715.20/x
  3. Step 3: Cross multiply
    26,121.60x = 39,124.80 × 15,715.20
  4. Step 4: Simplify right side
    26,121.60x = 614,854,056.96
  5. Step 5: Solve for x
    x = 614,854,056.96/26,121.60
  6. Step 6: Final answer
    x = 23,538.15

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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.