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Finding the Fourth Proportional to 12,385.66, 17,091.08 and 7,349.01

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Solution

The fourth proportional to 12,385.66, 17,091.08 and 7,349.01 is: 10,140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.66 : 17,091.08 = 7,349.01 : x
  2. Step 2: Convert to fraction form
    12,385.66/17,091.08 = 7,349.01/x
  3. Step 3: Cross multiply
    12,385.66x = 17,091.08 × 7,349.01
  4. Step 4: Simplify right side
    12,385.66x = 125,602,481.09
  5. Step 5: Solve for x
    x = 125,602,481.09/12,385.66
  6. Step 6: Final answer
    x = 10,140.96

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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.