Home / 21,425.52-32,138.56-7,564.80

Finding the Fourth Proportional to 21,425.52, 32,138.56 and 7,564.80

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Solution

The fourth proportional to 21,425.52, 32,138.56 and 7,564.80 is: 11,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.52 : 32,138.56 = 7,564.80 : x
  2. Step 2: Convert to fraction form
    21,425.52/32,138.56 = 7,564.80/x
  3. Step 3: Cross multiply
    21,425.52x = 32,138.56 × 7,564.80
  4. Step 4: Simplify right side
    21,425.52x = 243,121,778.69
  5. Step 5: Solve for x
    x = 243,121,778.69/21,425.52
  6. Step 6: Final answer
    x = 11,347.30

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1.5x scale

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.