Home / 28,117.20-42,176.55-12,314.10

Finding the Fourth Proportional to 28,117.20, 42,176.55 and 12,314.10

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Solution

The fourth proportional to 28,117.20, 42,176.55 and 12,314.10 is: 18,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.20 : 42,176.55 = 12,314.10 : x
  2. Step 2: Convert to fraction form
    28,117.20/42,176.55 = 12,314.10/x
  3. Step 3: Cross multiply
    28,117.20x = 42,176.55 × 12,314.10
  4. Step 4: Simplify right side
    28,117.20x = 519,366,254.36
  5. Step 5: Solve for x
    x = 519,366,254.36/28,117.20
  6. Step 6: Final answer
    x = 18,471.48

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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.