Home / 15,553.95-21,464.45-8,839.59

Finding the Fourth Proportional to 15,553.95, 21,464.45 and 8,839.59

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Solution

The fourth proportional to 15,553.95, 21,464.45 and 8,839.59 is: 12,198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.95 : 21,464.45 = 8,839.59 : x
  2. Step 2: Convert to fraction form
    15,553.95/21,464.45 = 8,839.59/x
  3. Step 3: Cross multiply
    15,553.95x = 21,464.45 × 8,839.59
  4. Step 4: Simplify right side
    15,553.95x = 189,736,937.58
  5. Step 5: Solve for x
    x = 189,736,937.58/15,553.95
  6. Step 6: Final answer
    x = 12,198.63

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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.