Home / 21,909.47-32,862.36-9,428.99

Finding the Fourth Proportional to 21,909.47, 32,862.36 and 9,428.99

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Solution

The fourth proportional to 21,909.47, 32,862.36 and 9,428.99 is: 14,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.47 : 32,862.36 = 9,428.99 : x
  2. Step 2: Convert to fraction form
    21,909.47/32,862.36 = 9,428.99/x
  3. Step 3: Cross multiply
    21,909.47x = 32,862.36 × 9,428.99
  4. Step 4: Simplify right side
    21,909.47x = 309,858,863.82
  5. Step 5: Solve for x
    x = 309,858,863.82/21,909.47
  6. Step 6: Final answer
    x = 14,142.69

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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.