Home / 21,347.17-32,030.79-13,447.87

Finding the Fourth Proportional to 21,347.17, 32,030.79 and 13,447.87

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Solution

The fourth proportional to 21,347.17, 32,030.79 and 13,447.87 is: 20,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.17 : 32,030.79 = 13,447.87 : x
  2. Step 2: Convert to fraction form
    21,347.17/32,030.79 = 13,447.87/x
  3. Step 3: Cross multiply
    21,347.17x = 32,030.79 × 13,447.87
  4. Step 4: Simplify right side
    21,347.17x = 430,745,899.92
  5. Step 5: Solve for x
    x = 430,745,899.92/21,347.17
  6. Step 6: Final answer
    x = 20,178.13

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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.