Home / 28,027.92-42,045.72-12,445.20

Finding the Fourth Proportional to 28,027.92, 42,045.72 and 12,445.20

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Solution

The fourth proportional to 28,027.92, 42,045.72 and 12,445.20 is: 18,669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,027.92 : 42,045.72 = 12,445.20 : x
  2. Step 2: Convert to fraction form
    28,027.92/42,045.72 = 12,445.20/x
  3. Step 3: Cross multiply
    28,027.92x = 42,045.72 × 12,445.20
  4. Step 4: Simplify right side
    28,027.92x = 523,267,394.54
  5. Step 5: Solve for x
    x = 523,267,394.54/28,027.92
  6. Step 6: Final answer
    x = 18,669.51

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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.