Home / 15,555.46-21,473.76-9,179.95

Finding the Fourth Proportional to 15,555.46, 21,473.76 and 9,179.95

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Solution

The fourth proportional to 15,555.46, 21,473.76 and 9,179.95 is: 12,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.46 : 21,473.76 = 9,179.95 : x
  2. Step 2: Convert to fraction form
    15,555.46/21,473.76 = 9,179.95/x
  3. Step 3: Cross multiply
    15,555.46x = 21,473.76 × 9,179.95
  4. Step 4: Simplify right side
    15,555.46x = 197,128,043.11
  5. Step 5: Solve for x
    x = 197,128,043.11/15,555.46
  6. Step 6: Final answer
    x = 12,672.59

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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.