Home / 15,146.20-20,902.36-9,174.48

Finding the Fourth Proportional to 15,146.20, 20,902.36 and 9,174.48

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Solution

The fourth proportional to 15,146.20, 20,902.36 and 9,174.48 is: 12,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.20 : 20,902.36 = 9,174.48 : x
  2. Step 2: Convert to fraction form
    15,146.20/20,902.36 = 9,174.48/x
  3. Step 3: Cross multiply
    15,146.20x = 20,902.36 × 9,174.48
  4. Step 4: Simplify right side
    15,146.20x = 191,768,283.77
  5. Step 5: Solve for x
    x = 191,768,283.77/15,146.20
  6. Step 6: Final answer
    x = 12,661.15

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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.