Home / 21,589.13-32,387.39-9,903.35

Finding the Fourth Proportional to 21,589.13, 32,387.39 and 9,903.35

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Solution

The fourth proportional to 21,589.13, 32,387.39 and 9,903.35 is: 14,856.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.13 : 32,387.39 = 9,903.35 : x
  2. Step 2: Convert to fraction form
    21,589.13/32,387.39 = 9,903.35/x
  3. Step 3: Cross multiply
    21,589.13x = 32,387.39 × 9,903.35
  4. Step 4: Simplify right side
    21,589.13x = 320,743,658.76
  5. Step 5: Solve for x
    x = 320,743,658.76/21,589.13
  6. Step 6: Final answer
    x = 14,856.72

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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.