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Finding the Fourth Proportional to 17,780.52, 26,655.66 and 10,859.88

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Solution

The fourth proportional to 17,780.52, 26,655.66 and 10,859.88 is: 16,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,780.52 : 26,655.66 = 10,859.88 : x
  2. Step 2: Convert to fraction form
    17,780.52/26,655.66 = 10,859.88/x
  3. Step 3: Cross multiply
    17,780.52x = 26,655.66 × 10,859.88
  4. Step 4: Simplify right side
    17,780.52x = 289,477,268.92
  5. Step 5: Solve for x
    x = 289,477,268.92/17,780.52
  6. Step 6: Final answer
    x = 16,280.59

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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.