Home / 39,303.27-54,239.85-21,398.55

Finding the Fourth Proportional to 39,303.27, 54,239.85 and 21,398.55

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Solution

The fourth proportional to 39,303.27, 54,239.85 and 21,398.55 is: 29,530.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,303.27 : 54,239.85 = 21,398.55 : x
  2. Step 2: Convert to fraction form
    39,303.27/54,239.85 = 21,398.55/x
  3. Step 3: Cross multiply
    39,303.27x = 54,239.85 × 21,398.55
  4. Step 4: Simplify right side
    39,303.27x = 1,160,654,142.22
  5. Step 5: Solve for x
    x = 1,160,654,142.22/39,303.27
  6. Step 6: Final answer
    x = 29,530.73

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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.