Home / 21,154.42-31,669.35-15,632.39

Finding the Fourth Proportional to 21,154.42, 31,669.35 and 15,632.39

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Solution

The fourth proportional to 21,154.42, 31,669.35 and 15,632.39 is: 23,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.42 : 31,669.35 = 15,632.39 : x
  2. Step 2: Convert to fraction form
    21,154.42/31,669.35 = 15,632.39/x
  3. Step 3: Cross multiply
    21,154.42x = 31,669.35 × 15,632.39
  4. Step 4: Simplify right side
    21,154.42x = 495,067,782.70
  5. Step 5: Solve for x
    x = 495,067,782.70/21,154.42
  6. Step 6: Final answer
    x = 23,402.57

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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.