Home / 39,325.60-54,270.24-21,421.60

Finding the Fourth Proportional to 39,325.60, 54,270.24 and 21,421.60

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Solution

The fourth proportional to 39,325.60, 54,270.24 and 21,421.60 is: 29,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.60 : 54,270.24 = 21,421.60 : x
  2. Step 2: Convert to fraction form
    39,325.60/54,270.24 = 21,421.60/x
  3. Step 3: Cross multiply
    39,325.60x = 54,270.24 × 21,421.60
  4. Step 4: Simplify right side
    39,325.60x = 1,162,555,373.18
  5. Step 5: Solve for x
    x = 1,162,555,373.18/39,325.60
  6. Step 6: Final answer
    x = 29,562.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.