Home / 23,130.40-31,911.36-15,177.04

Finding the Fourth Proportional to 23,130.40, 31,911.36 and 15,177.04

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Solution

The fourth proportional to 23,130.40, 31,911.36 and 15,177.04 is: 20,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.40 : 31,911.36 = 15,177.04 : x
  2. Step 2: Convert to fraction form
    23,130.40/31,911.36 = 15,177.04/x
  3. Step 3: Cross multiply
    23,130.40x = 31,911.36 × 15,177.04
  4. Step 4: Simplify right side
    23,130.40x = 484,319,987.17
  5. Step 5: Solve for x
    x = 484,319,987.17/23,130.40
  6. Step 6: Final answer
    x = 20,938.68

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Double scale
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Similar ratio
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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.