Home / 15,489.28-21,381.74-10,460.30

Finding the Fourth Proportional to 15,489.28, 21,381.74 and 10,460.30

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Solution

The fourth proportional to 15,489.28, 21,381.74 and 10,460.30 is: 14,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.28 : 21,381.74 = 10,460.30 : x
  2. Step 2: Convert to fraction form
    15,489.28/21,381.74 = 10,460.30/x
  3. Step 3: Cross multiply
    15,489.28x = 21,381.74 × 10,460.30
  4. Step 4: Simplify right side
    15,489.28x = 223,659,414.92
  5. Step 5: Solve for x
    x = 223,659,414.92/15,489.28
  6. Step 6: Final answer
    x = 14,439.63

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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.