Home / 10,001.72-13,805.16-5,810.78

Finding the Fourth Proportional to 10,001.72, 13,805.16 and 5,810.78

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Solution

The fourth proportional to 10,001.72, 13,805.16 and 5,810.78 is: 8,020.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.72 : 13,805.16 = 5,810.78 : x
  2. Step 2: Convert to fraction form
    10,001.72/13,805.16 = 5,810.78/x
  3. Step 3: Cross multiply
    10,001.72x = 13,805.16 × 5,810.78
  4. Step 4: Simplify right side
    10,001.72x = 80,218,747.62
  5. Step 5: Solve for x
    x = 80,218,747.62/10,001.72
  6. Step 6: Final answer
    x = 8,020.50

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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.