Home / 15,512.80-21,403.92-10,487.20

Finding the Fourth Proportional to 15,512.80, 21,403.92 and 10,487.20

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Solution

The fourth proportional to 15,512.80, 21,403.92 and 10,487.20 is: 14,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.80 : 21,403.92 = 10,487.20 : x
  2. Step 2: Convert to fraction form
    15,512.80/21,403.92 = 10,487.20/x
  3. Step 3: Cross multiply
    15,512.80x = 21,403.92 × 10,487.20
  4. Step 4: Simplify right side
    15,512.80x = 224,467,189.82
  5. Step 5: Solve for x
    x = 224,467,189.82/15,512.80
  6. Step 6: Final answer
    x = 14,469.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.