Home / 38,724.30-58,088.88-12,428.46

Finding the Fourth Proportional to 38,724.30, 58,088.88 and 12,428.46

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Solution

The fourth proportional to 38,724.30, 58,088.88 and 12,428.46 is: 18,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,724.30 : 58,088.88 = 12,428.46 : x
  2. Step 2: Convert to fraction form
    38,724.30/58,088.88 = 12,428.46/x
  3. Step 3: Cross multiply
    38,724.30x = 58,088.88 × 12,428.46
  4. Step 4: Simplify right side
    38,724.30x = 721,955,321.52
  5. Step 5: Solve for x
    x = 721,955,321.52/38,724.30
  6. Step 6: Final answer
    x = 18,643.47

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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.