Home / 20,925.60-31,359.24-15,725.40

Finding the Fourth Proportional to 20,925.60, 31,359.24 and 15,725.40

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Solution

The fourth proportional to 20,925.60, 31,359.24 and 15,725.40 is: 23,566.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.60 : 31,359.24 = 15,725.40 : x
  2. Step 2: Convert to fraction form
    20,925.60/31,359.24 = 15,725.40/x
  3. Step 3: Cross multiply
    20,925.60x = 31,359.24 × 15,725.40
  4. Step 4: Simplify right side
    20,925.60x = 493,136,592.70
  5. Step 5: Solve for x
    x = 493,136,592.70/20,925.60
  6. Step 6: Final answer
    x = 23,566.19

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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.