Home / 21,404.40-32,106.60-18,123.90

Finding the Fourth Proportional to 21,404.40, 32,106.60 and 18,123.90

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Solution

The fourth proportional to 21,404.40, 32,106.60 and 18,123.90 is: 27,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.40 : 32,106.60 = 18,123.90 : x
  2. Step 2: Convert to fraction form
    21,404.40/32,106.60 = 18,123.90/x
  3. Step 3: Cross multiply
    21,404.40x = 32,106.60 × 18,123.90
  4. Step 4: Simplify right side
    21,404.40x = 581,896,807.74
  5. Step 5: Solve for x
    x = 581,896,807.74/21,404.40
  6. Step 6: Final answer
    x = 27,185.85

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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.