Home / 25,428.71-38,117.61-12,078.18

Finding the Fourth Proportional to 25,428.71, 38,117.61 and 12,078.18

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Solution

The fourth proportional to 25,428.71, 38,117.61 and 12,078.18 is: 18,105.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.71 : 38,117.61 = 12,078.18 : x
  2. Step 2: Convert to fraction form
    25,428.71/38,117.61 = 12,078.18/x
  3. Step 3: Cross multiply
    25,428.71x = 38,117.61 × 12,078.18
  4. Step 4: Simplify right side
    25,428.71x = 460,391,354.75
  5. Step 5: Solve for x
    x = 460,391,354.75/25,428.71
  6. Step 6: Final answer
    x = 18,105.18

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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.