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Finding the Fourth Proportional to 17,810.90, 26,711.55 and 5,330.90

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Solution

The fourth proportional to 17,810.90, 26,711.55 and 5,330.90 is: 7,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,810.90 : 26,711.55 = 5,330.90 : x
  2. Step 2: Convert to fraction form
    17,810.90/26,711.55 = 5,330.90/x
  3. Step 3: Cross multiply
    17,810.90x = 26,711.55 × 5,330.90
  4. Step 4: Simplify right side
    17,810.90x = 142,396,601.90
  5. Step 5: Solve for x
    x = 142,396,601.90/17,810.90
  6. Step 6: Final answer
    x = 7,994.91

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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.