Home / 25,724.17-38,580.38-12,390.36

Finding the Fourth Proportional to 25,724.17, 38,580.38 and 12,390.36

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Solution

The fourth proportional to 25,724.17, 38,580.38 and 12,390.36 is: 18,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,724.17 : 38,580.38 = 12,390.36 : x
  2. Step 2: Convert to fraction form
    25,724.17/38,580.38 = 12,390.36/x
  3. Step 3: Cross multiply
    25,724.17x = 38,580.38 × 12,390.36
  4. Step 4: Simplify right side
    25,724.17x = 478,024,797.14
  5. Step 5: Solve for x
    x = 478,024,797.14/25,724.17
  6. Step 6: Final answer
    x = 18,582.71

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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.