Home / 38,957.16-53,760.12-21,961.20

Finding the Fourth Proportional to 38,957.16, 53,760.12 and 21,961.20

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Solution

The fourth proportional to 38,957.16, 53,760.12 and 21,961.20 is: 30,306.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,957.16 : 53,760.12 = 21,961.20 : x
  2. Step 2: Convert to fraction form
    38,957.16/53,760.12 = 21,961.20/x
  3. Step 3: Cross multiply
    38,957.16x = 53,760.12 × 21,961.20
  4. Step 4: Simplify right side
    38,957.16x = 1,180,636,747.34
  5. Step 5: Solve for x
    x = 1,180,636,747.34/38,957.16
  6. Step 6: Final answer
    x = 30,306.03

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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.