Home / 20,432.90-30,641.42-7,951.26

Finding the Fourth Proportional to 20,432.90, 30,641.42 and 7,951.26

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Solution

The fourth proportional to 20,432.90, 30,641.42 and 7,951.26 is: 11,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.90 : 30,641.42 = 7,951.26 : x
  2. Step 2: Convert to fraction form
    20,432.90/30,641.42 = 7,951.26/x
  3. Step 3: Cross multiply
    20,432.90x = 30,641.42 × 7,951.26
  4. Step 4: Simplify right side
    20,432.90x = 243,637,897.19
  5. Step 5: Solve for x
    x = 243,637,897.19/20,432.90
  6. Step 6: Final answer
    x = 11,923.80

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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.