Home / 20,703.52-31,062.56-9,015.20

Finding the Fourth Proportional to 20,703.52, 31,062.56 and 9,015.20

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Solution

The fourth proportional to 20,703.52, 31,062.56 and 9,015.20 is: 13,525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.52 : 31,062.56 = 9,015.20 : x
  2. Step 2: Convert to fraction form
    20,703.52/31,062.56 = 9,015.20/x
  3. Step 3: Cross multiply
    20,703.52x = 31,062.56 × 9,015.20
  4. Step 4: Simplify right side
    20,703.52x = 280,035,190.91
  5. Step 5: Solve for x
    x = 280,035,190.91/20,703.52
  6. Step 6: Final answer
    x = 13,525.97

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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.