Home / 39,152.74-54,031.18-21,247.90

Finding the Fourth Proportional to 39,152.74, 54,031.18 and 21,247.90

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Solution

The fourth proportional to 39,152.74, 54,031.18 and 21,247.90 is: 29,322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,152.74 : 54,031.18 = 21,247.90 : x
  2. Step 2: Convert to fraction form
    39,152.74/54,031.18 = 21,247.90/x
  3. Step 3: Cross multiply
    39,152.74x = 54,031.18 × 21,247.90
  4. Step 4: Simplify right side
    39,152.74x = 1,148,049,109.52
  5. Step 5: Solve for x
    x = 1,148,049,109.52/39,152.74
  6. Step 6: Final answer
    x = 29,322.32

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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.