Home / 20,377.65-30,575.52-12,980.19

Finding the Fourth Proportional to 20,377.65, 30,575.52 and 12,980.19

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Solution

The fourth proportional to 20,377.65, 30,575.52 and 12,980.19 is: 19,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.65 : 30,575.52 = 12,980.19 : x
  2. Step 2: Convert to fraction form
    20,377.65/30,575.52 = 12,980.19/x
  3. Step 3: Cross multiply
    20,377.65x = 30,575.52 × 12,980.19
  4. Step 4: Simplify right side
    20,377.65x = 396,876,058.95
  5. Step 5: Solve for x
    x = 396,876,058.95/20,377.65
  6. Step 6: Final answer
    x = 19,476.05

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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.