Home / 20,489.02-28,271.90-11,414.32

Finding the Fourth Proportional to 20,489.02, 28,271.90 and 11,414.32

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Solution

The fourth proportional to 20,489.02, 28,271.90 and 11,414.32 is: 15,750.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.02 : 28,271.90 = 11,414.32 : x
  2. Step 2: Convert to fraction form
    20,489.02/28,271.90 = 11,414.32/x
  3. Step 3: Cross multiply
    20,489.02x = 28,271.90 × 11,414.32
  4. Step 4: Simplify right side
    20,489.02x = 322,704,471.46
  5. Step 5: Solve for x
    x = 322,704,471.46/20,489.02
  6. Step 6: Final answer
    x = 15,750.12

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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.