Home / 13,177.80-19,766.70-9,505.80

Finding the Fourth Proportional to 13,177.80, 19,766.70 and 9,505.80

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Solution

The fourth proportional to 13,177.80, 19,766.70 and 9,505.80 is: 14,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.80 : 19,766.70 = 9,505.80 : x
  2. Step 2: Convert to fraction form
    13,177.80/19,766.70 = 9,505.80/x
  3. Step 3: Cross multiply
    13,177.80x = 19,766.70 × 9,505.80
  4. Step 4: Simplify right side
    13,177.80x = 187,898,296.86
  5. Step 5: Solve for x
    x = 187,898,296.86/13,177.80
  6. Step 6: Final answer
    x = 14,258.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.