Home / 28,011.04-42,023.20-8,020.80

Finding the Fourth Proportional to 28,011.04, 42,023.20 and 8,020.80

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Solution

The fourth proportional to 28,011.04, 42,023.20 and 8,020.80 is: 12,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.04 : 42,023.20 = 8,020.80 : x
  2. Step 2: Convert to fraction form
    28,011.04/42,023.20 = 8,020.80/x
  3. Step 3: Cross multiply
    28,011.04x = 42,023.20 × 8,020.80
  4. Step 4: Simplify right side
    28,011.04x = 337,059,682.56
  5. Step 5: Solve for x
    x = 337,059,682.56/28,011.04
  6. Step 6: Final answer
    x = 12,033.10

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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.