Home / 38,958.16-53,761.50-21,962.20

Finding the Fourth Proportional to 38,958.16, 53,761.50 and 21,962.20

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Solution

The fourth proportional to 38,958.16, 53,761.50 and 21,962.20 is: 30,307.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,958.16 : 53,761.50 = 21,962.20 : x
  2. Step 2: Convert to fraction form
    38,958.16/53,761.50 = 21,962.20/x
  3. Step 3: Cross multiply
    38,958.16x = 53,761.50 × 21,962.20
  4. Step 4: Simplify right side
    38,958.16x = 1,180,720,815.30
  5. Step 5: Solve for x
    x = 1,180,720,815.30/38,958.16
  6. Step 6: Final answer
    x = 30,307.41

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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.