Home / 10,300.80-15,439.24-4,742.47

Finding the Fourth Proportional to 10,300.80, 15,439.24 and 4,742.47

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Solution

The fourth proportional to 10,300.80, 15,439.24 and 4,742.47 is: 7,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.80 : 15,439.24 = 4,742.47 : x
  2. Step 2: Convert to fraction form
    10,300.80/15,439.24 = 4,742.47/x
  3. Step 3: Cross multiply
    10,300.80x = 15,439.24 × 4,742.47
  4. Step 4: Simplify right side
    10,300.80x = 73,220,104.28
  5. Step 5: Solve for x
    x = 73,220,104.28/10,300.80
  6. Step 6: Final answer
    x = 7,108.19

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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.