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Finding the Fourth Proportional to 24,191.40, 36,287.10 and 21,119.40

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Solution

The fourth proportional to 24,191.40, 36,287.10 and 21,119.40 is: 31,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,191.40 : 36,287.10 = 21,119.40 : x
  2. Step 2: Convert to fraction form
    24,191.40/36,287.10 = 21,119.40/x
  3. Step 3: Cross multiply
    24,191.40x = 36,287.10 × 21,119.40
  4. Step 4: Simplify right side
    24,191.40x = 766,361,779.74
  5. Step 5: Solve for x
    x = 766,361,779.74/24,191.40
  6. Step 6: Final answer
    x = 31,679.10

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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.