Home / 21,639.62-32,374.03-16,389.76

Finding the Fourth Proportional to 21,639.62, 32,374.03 and 16,389.76

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Solution

The fourth proportional to 21,639.62, 32,374.03 and 16,389.76 is: 24,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.62 : 32,374.03 = 16,389.76 : x
  2. Step 2: Convert to fraction form
    21,639.62/32,374.03 = 16,389.76/x
  3. Step 3: Cross multiply
    21,639.62x = 32,374.03 × 16,389.76
  4. Step 4: Simplify right side
    21,639.62x = 530,602,551.46
  5. Step 5: Solve for x
    x = 530,602,551.46/21,639.62
  6. Step 6: Final answer
    x = 24,519.95

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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.