Home / 13,728.13-18,938.52-8,062.76

Finding the Fourth Proportional to 13,728.13, 18,938.52 and 8,062.76

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Solution

The fourth proportional to 13,728.13, 18,938.52 and 8,062.76 is: 11,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.13 : 18,938.52 = 8,062.76 : x
  2. Step 2: Convert to fraction form
    13,728.13/18,938.52 = 8,062.76/x
  3. Step 3: Cross multiply
    13,728.13x = 18,938.52 × 8,062.76
  4. Step 4: Simplify right side
    13,728.13x = 152,696,788.86
  5. Step 5: Solve for x
    x = 152,696,788.86/13,728.13
  6. Step 6: Final answer
    x = 11,122.91

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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.