Home / 25,666.08-38,505.52-13,991.20

Finding the Fourth Proportional to 25,666.08, 38,505.52 and 13,991.20

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Solution

The fourth proportional to 25,666.08, 38,505.52 and 13,991.20 is: 20,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,666.08 : 38,505.52 = 13,991.20 : x
  2. Step 2: Convert to fraction form
    25,666.08/38,505.52 = 13,991.20/x
  3. Step 3: Cross multiply
    25,666.08x = 38,505.52 × 13,991.20
  4. Step 4: Simplify right side
    25,666.08x = 538,738,431.42
  5. Step 5: Solve for x
    x = 538,738,431.42/25,666.08
  6. Step 6: Final answer
    x = 20,990.29

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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.