Home / 10,153.20-15,231.96-4,312.56

Finding the Fourth Proportional to 10,153.20, 15,231.96 and 4,312.56

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Solution

The fourth proportional to 10,153.20, 15,231.96 and 4,312.56 is: 6,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,153.20 : 15,231.96 = 4,312.56 : x
  2. Step 2: Convert to fraction form
    10,153.20/15,231.96 = 4,312.56/x
  3. Step 3: Cross multiply
    10,153.20x = 15,231.96 × 4,312.56
  4. Step 4: Simplify right side
    10,153.20x = 65,688,741.42
  5. Step 5: Solve for x
    x = 65,688,741.42/10,153.20
  6. Step 6: Final answer
    x = 6,469.76

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1.5x scale

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.