Home / 28,680.90-43,022.61-8,959.83

Finding the Fourth Proportional to 28,680.90, 43,022.61 and 8,959.83

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Solution

The fourth proportional to 28,680.90, 43,022.61 and 8,959.83 is: 13,440.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.90 : 43,022.61 = 8,959.83 : x
  2. Step 2: Convert to fraction form
    28,680.90/43,022.61 = 8,959.83/x
  3. Step 3: Cross multiply
    28,680.90x = 43,022.61 × 8,959.83
  4. Step 4: Simplify right side
    28,680.90x = 385,475,271.76
  5. Step 5: Solve for x
    x = 385,475,271.76/28,680.90
  6. Step 6: Final answer
    x = 13,440.14

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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.