Home / 10,543.05-15,816.13-3,970.78

Finding the Fourth Proportional to 10,543.05, 15,816.13 and 3,970.78

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Solution

The fourth proportional to 10,543.05, 15,816.13 and 3,970.78 is: 5,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,543.05 : 15,816.13 = 3,970.78 : x
  2. Step 2: Convert to fraction form
    10,543.05/15,816.13 = 3,970.78/x
  3. Step 3: Cross multiply
    10,543.05x = 15,816.13 × 3,970.78
  4. Step 4: Simplify right side
    10,543.05x = 62,802,323.21
  5. Step 5: Solve for x
    x = 62,802,323.21/10,543.05
  6. Step 6: Final answer
    x = 5,956.75

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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.