Home / 21,384.18-32,062.68-18,756.96

Finding the Fourth Proportional to 21,384.18, 32,062.68 and 18,756.96

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Solution

The fourth proportional to 21,384.18, 32,062.68 and 18,756.96 is: 28,123.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.18 : 32,062.68 = 18,756.96 : x
  2. Step 2: Convert to fraction form
    21,384.18/32,062.68 = 18,756.96/x
  3. Step 3: Cross multiply
    21,384.18x = 32,062.68 × 18,756.96
  4. Step 4: Simplify right side
    21,384.18x = 601,398,406.25
  5. Step 5: Solve for x
    x = 601,398,406.25/21,384.18
  6. Step 6: Final answer
    x = 28,123.52

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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.