Home / 21,985.88-32,924.10-15,381.14

Finding the Fourth Proportional to 21,985.88, 32,924.10 and 15,381.14

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Solution

The fourth proportional to 21,985.88, 32,924.10 and 15,381.14 is: 23,033.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.88 : 32,924.10 = 15,381.14 : x
  2. Step 2: Convert to fraction form
    21,985.88/32,924.10 = 15,381.14/x
  3. Step 3: Cross multiply
    21,985.88x = 32,924.10 × 15,381.14
  4. Step 4: Simplify right side
    21,985.88x = 506,410,191.47
  5. Step 5: Solve for x
    x = 506,410,191.47/21,985.88
  6. Step 6: Final answer
    x = 23,033.43

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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.