Home / 15,439.92-21,284.78-10,125.52

Finding the Fourth Proportional to 15,439.92, 21,284.78 and 10,125.52

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Solution

The fourth proportional to 15,439.92, 21,284.78 and 10,125.52 is: 13,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.92 : 21,284.78 = 10,125.52 : x
  2. Step 2: Convert to fraction form
    15,439.92/21,284.78 = 10,125.52/x
  3. Step 3: Cross multiply
    15,439.92x = 21,284.78 × 10,125.52
  4. Step 4: Simplify right side
    15,439.92x = 215,519,465.59
  5. Step 5: Solve for x
    x = 215,519,465.59/15,439.92
  6. Step 6: Final answer
    x = 13,958.59

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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.