Home / 20,627.28-28,450.53-13,443.84

Finding the Fourth Proportional to 20,627.28, 28,450.53 and 13,443.84

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Solution

The fourth proportional to 20,627.28, 28,450.53 and 13,443.84 is: 18,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.28 : 28,450.53 = 13,443.84 : x
  2. Step 2: Convert to fraction form
    20,627.28/28,450.53 = 13,443.84/x
  3. Step 3: Cross multiply
    20,627.28x = 28,450.53 × 13,443.84
  4. Step 4: Simplify right side
    20,627.28x = 382,484,373.24
  5. Step 5: Solve for x
    x = 382,484,373.24/20,627.28
  6. Step 6: Final answer
    x = 18,542.65

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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.