Home / 14,780.33-20,393.87-9,404.90

Finding the Fourth Proportional to 14,780.33, 20,393.87 and 9,404.90

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Solution

The fourth proportional to 14,780.33, 20,393.87 and 9,404.90 is: 12,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.33 : 20,393.87 = 9,404.90 : x
  2. Step 2: Convert to fraction form
    14,780.33/20,393.87 = 9,404.90/x
  3. Step 3: Cross multiply
    14,780.33x = 20,393.87 × 9,404.90
  4. Step 4: Simplify right side
    14,780.33x = 191,802,307.96
  5. Step 5: Solve for x
    x = 191,802,307.96/14,780.33
  6. Step 6: Final answer
    x = 12,976.86

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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.