Home / 13,177.66-18,176.22-8,070.79

Finding the Fourth Proportional to 13,177.66, 18,176.22 and 8,070.79

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Solution

The fourth proportional to 13,177.66, 18,176.22 and 8,070.79 is: 11,132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.66 : 18,176.22 = 8,070.79 : x
  2. Step 2: Convert to fraction form
    13,177.66/18,176.22 = 8,070.79/x
  3. Step 3: Cross multiply
    13,177.66x = 18,176.22 × 8,070.79
  4. Step 4: Simplify right side
    13,177.66x = 146,696,454.61
  5. Step 5: Solve for x
    x = 146,696,454.61/13,177.66
  6. Step 6: Final answer
    x = 11,132.21

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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.