Home / 20,170.47-30,224.10-12,759.28

Finding the Fourth Proportional to 20,170.47, 30,224.10 and 12,759.28

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Solution

The fourth proportional to 20,170.47, 30,224.10 and 12,759.28 is: 19,118.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.47 : 30,224.10 = 12,759.28 : x
  2. Step 2: Convert to fraction form
    20,170.47/30,224.10 = 12,759.28/x
  3. Step 3: Cross multiply
    20,170.47x = 30,224.10 × 12,759.28
  4. Step 4: Simplify right side
    20,170.47x = 385,637,726.94
  5. Step 5: Solve for x
    x = 385,637,726.94/20,170.47
  6. Step 6: Final answer
    x = 19,118.92

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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.