Home / 10,031.76-15,047.31-4,769.28

Finding the Fourth Proportional to 10,031.76, 15,047.31 and 4,769.28

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Solution

The fourth proportional to 10,031.76, 15,047.31 and 4,769.28 is: 7,153.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,031.76 : 15,047.31 = 4,769.28 : x
  2. Step 2: Convert to fraction form
    10,031.76/15,047.31 = 4,769.28/x
  3. Step 3: Cross multiply
    10,031.76x = 15,047.31 × 4,769.28
  4. Step 4: Simplify right side
    10,031.76x = 71,764,834.64
  5. Step 5: Solve for x
    x = 71,764,834.64/10,031.76
  6. Step 6: Final answer
    x = 7,153.76

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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.