Home / 10,358.16-15,519.96-5,420.88

Finding the Fourth Proportional to 10,358.16, 15,519.96 and 5,420.88

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Solution

The fourth proportional to 10,358.16, 15,519.96 and 5,420.88 is: 8,122.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,358.16 : 15,519.96 = 5,420.88 : x
  2. Step 2: Convert to fraction form
    10,358.16/15,519.96 = 5,420.88/x
  3. Step 3: Cross multiply
    10,358.16x = 15,519.96 × 5,420.88
  4. Step 4: Simplify right side
    10,358.16x = 84,131,840.76
  5. Step 5: Solve for x
    x = 84,131,840.76/10,358.16
  6. Step 6: Final answer
    x = 8,122.28

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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.