Home / 10,543.07-15,817.20-7,429.16

Finding the Fourth Proportional to 10,543.07, 15,817.20 and 7,429.16

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Solution

The fourth proportional to 10,543.07, 15,817.20 and 7,429.16 is: 11,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,543.07 : 15,817.20 = 7,429.16 : x
  2. Step 2: Convert to fraction form
    10,543.07/15,817.20 = 7,429.16/x
  3. Step 3: Cross multiply
    10,543.07x = 15,817.20 × 7,429.16
  4. Step 4: Simplify right side
    10,543.07x = 117,508,430.47
  5. Step 5: Solve for x
    x = 117,508,430.47/10,543.07
  6. Step 6: Final answer
    x = 11,145.56

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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.