Home / 28,680.04-43,020.78-13,886.20

Finding the Fourth Proportional to 28,680.04, 43,020.78 and 13,886.20

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Solution

The fourth proportional to 28,680.04, 43,020.78 and 13,886.20 is: 20,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.04 : 43,020.78 = 13,886.20 : x
  2. Step 2: Convert to fraction form
    28,680.04/43,020.78 = 13,886.20/x
  3. Step 3: Cross multiply
    28,680.04x = 43,020.78 × 13,886.20
  4. Step 4: Simplify right side
    28,680.04x = 597,395,155.24
  5. Step 5: Solve for x
    x = 597,395,155.24/28,680.04
  6. Step 6: Final answer
    x = 20,829.65

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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.