Home / 30,291.16-45,456.30-12,761.08

Finding the Fourth Proportional to 30,291.16, 45,456.30 and 12,761.08

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Solution

The fourth proportional to 30,291.16, 45,456.30 and 12,761.08 is: 19,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.16 : 45,456.30 = 12,761.08 : x
  2. Step 2: Convert to fraction form
    30,291.16/45,456.30 = 12,761.08/x
  3. Step 3: Cross multiply
    30,291.16x = 45,456.30 × 12,761.08
  4. Step 4: Simplify right side
    30,291.16x = 580,071,480.80
  5. Step 5: Solve for x
    x = 580,071,480.80/30,291.16
  6. Step 6: Final answer
    x = 19,149.86

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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.