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Finding the Fourth Proportional to 17,543.70, 26,319.87 and 12,359.70

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Solution

The fourth proportional to 17,543.70, 26,319.87 and 12,359.70 is: 18,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,543.70 : 26,319.87 = 12,359.70 : x
  2. Step 2: Convert to fraction form
    17,543.70/26,319.87 = 12,359.70/x
  3. Step 3: Cross multiply
    17,543.70x = 26,319.87 × 12,359.70
  4. Step 4: Simplify right side
    17,543.70x = 325,305,697.24
  5. Step 5: Solve for x
    x = 325,305,697.24/17,543.70
  6. Step 6: Final answer
    x = 18,542.59

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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.