Home / 21,681.63-32,470.47-11,123.87

Finding the Fourth Proportional to 21,681.63, 32,470.47 and 11,123.87

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Solution

The fourth proportional to 21,681.63, 32,470.47 and 11,123.87 is: 16,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.63 : 32,470.47 = 11,123.87 : x
  2. Step 2: Convert to fraction form
    21,681.63/32,470.47 = 11,123.87/x
  3. Step 3: Cross multiply
    21,681.63x = 32,470.47 × 11,123.87
  4. Step 4: Simplify right side
    21,681.63x = 361,197,124.77
  5. Step 5: Solve for x
    x = 361,197,124.77/21,681.63
  6. Step 6: Final answer
    x = 16,659.13

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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.