Home / 10,505.76-15,749.68-5,572.64

Finding the Fourth Proportional to 10,505.76, 15,749.68 and 5,572.64

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Solution

The fourth proportional to 10,505.76, 15,749.68 and 5,572.64 is: 8,354.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.76 : 15,749.68 = 5,572.64 : x
  2. Step 2: Convert to fraction form
    10,505.76/15,749.68 = 5,572.64/x
  3. Step 3: Cross multiply
    10,505.76x = 15,749.68 × 5,572.64
  4. Step 4: Simplify right side
    10,505.76x = 87,767,296.76
  5. Step 5: Solve for x
    x = 87,767,296.76/10,505.76
  6. Step 6: Final answer
    x = 8,354.21

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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.