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Finding the Fourth Proportional to 10,125.78, 15,162.69 and 7,001.47

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Solution

The fourth proportional to 10,125.78, 15,162.69 and 7,001.47 is: 10,484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,125.78 : 15,162.69 = 7,001.47 : x
  2. Step 2: Convert to fraction form
    10,125.78/15,162.69 = 7,001.47/x
  3. Step 3: Cross multiply
    10,125.78x = 15,162.69 × 7,001.47
  4. Step 4: Simplify right side
    10,125.78x = 106,161,164.36
  5. Step 5: Solve for x
    x = 106,161,164.36/10,125.78
  6. Step 6: Final answer
    x = 10,484.25

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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.