Home / 14,780.52-20,404.64-11,415.78

Finding the Fourth Proportional to 14,780.52, 20,404.64 and 11,415.78

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Solution

The fourth proportional to 14,780.52, 20,404.64 and 11,415.78 is: 15,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.52 : 20,404.64 = 11,415.78 : x
  2. Step 2: Convert to fraction form
    14,780.52/20,404.64 = 11,415.78/x
  3. Step 3: Cross multiply
    14,780.52x = 20,404.64 × 11,415.78
  4. Step 4: Simplify right side
    14,780.52x = 232,934,909.76
  5. Step 5: Solve for x
    x = 232,934,909.76/14,780.52
  6. Step 6: Final answer
    x = 15,759.59

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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.