Home / 25,681.90-38,529.60-8,151.70

Finding the Fourth Proportional to 25,681.90, 38,529.60 and 8,151.70

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Solution

The fourth proportional to 25,681.90, 38,529.60 and 8,151.70 is: 12,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,681.90 : 38,529.60 = 8,151.70 : x
  2. Step 2: Convert to fraction form
    25,681.90/38,529.60 = 8,151.70/x
  3. Step 3: Cross multiply
    25,681.90x = 38,529.60 × 8,151.70
  4. Step 4: Simplify right side
    25,681.90x = 314,081,740.32
  5. Step 5: Solve for x
    x = 314,081,740.32/25,681.90
  6. Step 6: Final answer
    x = 12,229.69

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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.