Home / 38,753.90-53,479.91-21,757.72

Finding the Fourth Proportional to 38,753.90, 53,479.91 and 21,757.72

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Solution

The fourth proportional to 38,753.90, 53,479.91 and 21,757.72 is: 30,025.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,753.90 : 53,479.91 = 21,757.72 : x
  2. Step 2: Convert to fraction form
    38,753.90/53,479.91 = 21,757.72/x
  3. Step 3: Cross multiply
    38,753.90x = 53,479.91 × 21,757.72
  4. Step 4: Simplify right side
    38,753.90x = 1,163,600,907.41
  5. Step 5: Solve for x
    x = 1,163,600,907.41/38,753.90
  6. Step 6: Final answer
    x = 30,025.39

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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.