Home / 10,512.80-15,769.20-10,359.20

Finding the Fourth Proportional to 10,512.80, 15,769.20 and 10,359.20

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Solution

The fourth proportional to 10,512.80, 15,769.20 and 10,359.20 is: 15,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512.80 : 15,769.20 = 10,359.20 : x
  2. Step 2: Convert to fraction form
    10,512.80/15,769.20 = 10,359.20/x
  3. Step 3: Cross multiply
    10,512.80x = 15,769.20 × 10,359.20
  4. Step 4: Simplify right side
    10,512.80x = 163,356,296.64
  5. Step 5: Solve for x
    x = 163,356,296.64/10,512.80
  6. Step 6: Final answer
    x = 15,538.80

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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.