Home / 12,505.08-17,279.86-11,897.80

Finding the Fourth Proportional to 12,505.08, 17,279.86 and 11,897.80

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Solution

The fourth proportional to 12,505.08, 17,279.86 and 11,897.80 is: 16,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.08 : 17,279.86 = 11,897.80 : x
  2. Step 2: Convert to fraction form
    12,505.08/17,279.86 = 11,897.80/x
  3. Step 3: Cross multiply
    12,505.08x = 17,279.86 × 11,897.80
  4. Step 4: Simplify right side
    12,505.08x = 205,592,318.31
  5. Step 5: Solve for x
    x = 205,592,318.31/12,505.08
  6. Step 6: Final answer
    x = 16,440.70

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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.