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Finding the Fourth Proportional to 17,807.80, 26,711.70 and 15,503.80

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Solution

The fourth proportional to 17,807.80, 26,711.70 and 15,503.80 is: 23,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,807.80 : 26,711.70 = 15,503.80 : x
  2. Step 2: Convert to fraction form
    17,807.80/26,711.70 = 15,503.80/x
  3. Step 3: Cross multiply
    17,807.80x = 26,711.70 × 15,503.80
  4. Step 4: Simplify right side
    17,807.80x = 414,132,854.46
  5. Step 5: Solve for x
    x = 414,132,854.46/17,807.80
  6. Step 6: Final answer
    x = 23,255.70

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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.