Home / 21,352.38-29,451.47-14,638.61

Finding the Fourth Proportional to 21,352.38, 29,451.47 and 14,638.61

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Solution

The fourth proportional to 21,352.38, 29,451.47 and 14,638.61 is: 20,191.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.38 : 29,451.47 = 14,638.61 : x
  2. Step 2: Convert to fraction form
    21,352.38/29,451.47 = 14,638.61/x
  3. Step 3: Cross multiply
    21,352.38x = 29,451.47 × 14,638.61
  4. Step 4: Simplify right side
    21,352.38x = 431,128,362.81
  5. Step 5: Solve for x
    x = 431,128,362.81/21,352.38
  6. Step 6: Final answer
    x = 20,191.12

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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.