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Finding the Fourth Proportional to 12,393.54, 18,573.90 and 9,091.17

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Solution

The fourth proportional to 12,393.54, 18,573.90 and 9,091.17 is: 13,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.54 : 18,573.90 = 9,091.17 : x
  2. Step 2: Convert to fraction form
    12,393.54/18,573.90 = 9,091.17/x
  3. Step 3: Cross multiply
    12,393.54x = 18,573.90 × 9,091.17
  4. Step 4: Simplify right side
    12,393.54x = 168,858,482.46
  5. Step 5: Solve for x
    x = 168,858,482.46/12,393.54
  6. Step 6: Final answer
    x = 13,624.72

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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.