Home / 28,020.04-42,017.10-12,442.12

Finding the Fourth Proportional to 28,020.04, 42,017.10 and 12,442.12

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Solution

The fourth proportional to 28,020.04, 42,017.10 and 12,442.12 is: 18,657.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.04 : 42,017.10 = 12,442.12 : x
  2. Step 2: Convert to fraction form
    28,020.04/42,017.10 = 12,442.12/x
  3. Step 3: Cross multiply
    28,020.04x = 42,017.10 × 12,442.12
  4. Step 4: Simplify right side
    28,020.04x = 522,781,800.25
  5. Step 5: Solve for x
    x = 522,781,800.25/28,020.04
  6. Step 6: Final answer
    x = 18,657.43

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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.