Home / 20,460.57-28,238.28-15,170.46

Finding the Fourth Proportional to 20,460.57, 28,238.28 and 15,170.46

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Solution

The fourth proportional to 20,460.57, 28,238.28 and 15,170.46 is: 20,937.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.57 : 28,238.28 = 15,170.46 : x
  2. Step 2: Convert to fraction form
    20,460.57/28,238.28 = 15,170.46/x
  3. Step 3: Cross multiply
    20,460.57x = 28,238.28 × 15,170.46
  4. Step 4: Simplify right side
    20,460.57x = 428,387,697.21
  5. Step 5: Solve for x
    x = 428,387,697.21/20,460.57
  6. Step 6: Final answer
    x = 20,937.23

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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.