Home / 21,419.64-32,123.30-7,379.10

Finding the Fourth Proportional to 21,419.64, 32,123.30 and 7,379.10

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Solution

The fourth proportional to 21,419.64, 32,123.30 and 7,379.10 is: 11,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.64 : 32,123.30 = 7,379.10 : x
  2. Step 2: Convert to fraction form
    21,419.64/32,123.30 = 7,379.10/x
  3. Step 3: Cross multiply
    21,419.64x = 32,123.30 × 7,379.10
  4. Step 4: Simplify right side
    21,419.64x = 237,041,006.13
  5. Step 5: Solve for x
    x = 237,041,006.13/21,419.64
  6. Step 6: Final answer
    x = 11,066.53

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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.