Home / 21,425.27-32,130.36-6,427.91

Finding the Fourth Proportional to 21,425.27, 32,130.36 and 6,427.91

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Solution

The fourth proportional to 21,425.27, 32,130.36 and 6,427.91 is: 9,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.27 : 32,130.36 = 6,427.91 : x
  2. Step 2: Convert to fraction form
    21,425.27/32,130.36 = 6,427.91/x
  3. Step 3: Cross multiply
    21,425.27x = 32,130.36 × 6,427.91
  4. Step 4: Simplify right side
    21,425.27x = 206,530,901.70
  5. Step 5: Solve for x
    x = 206,530,901.70/21,425.27
  6. Step 6: Final answer
    x = 9,639.60

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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.