Home / 21,184.47-29,167.56-17,990.91

Finding the Fourth Proportional to 21,184.47, 29,167.56 and 17,990.91

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Solution

The fourth proportional to 21,184.47, 29,167.56 and 17,990.91 is: 24,770.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.47 : 29,167.56 = 17,990.91 : x
  2. Step 2: Convert to fraction form
    21,184.47/29,167.56 = 17,990.91/x
  3. Step 3: Cross multiply
    21,184.47x = 29,167.56 × 17,990.91
  4. Step 4: Simplify right side
    21,184.47x = 524,750,946.88
  5. Step 5: Solve for x
    x = 524,750,946.88/21,184.47
  6. Step 6: Final answer
    x = 24,770.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.