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Finding the Fourth Proportional to 13,001.78, 17,942.47 and 7,337.74

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Solution

The fourth proportional to 13,001.78, 17,942.47 and 7,337.74 is: 10,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.78 : 17,942.47 = 7,337.74 : x
  2. Step 2: Convert to fraction form
    13,001.78/17,942.47 = 7,337.74/x
  3. Step 3: Cross multiply
    13,001.78x = 17,942.47 × 7,337.74
  4. Step 4: Simplify right side
    13,001.78x = 131,657,116.62
  5. Step 5: Solve for x
    x = 131,657,116.62/13,001.78
  6. Step 6: Final answer
    x = 10,126.08

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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.