Home / 28,939.86-39,948.48-18,876.96

Finding the Fourth Proportional to 28,939.86, 39,948.48 and 18,876.96

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Solution

The fourth proportional to 28,939.86, 39,948.48 and 18,876.96 is: 26,057.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.86 : 39,948.48 = 18,876.96 : x
  2. Step 2: Convert to fraction form
    28,939.86/39,948.48 = 18,876.96/x
  3. Step 3: Cross multiply
    28,939.86x = 39,948.48 × 18,876.96
  4. Step 4: Simplify right side
    28,939.86x = 754,105,859.02
  5. Step 5: Solve for x
    x = 754,105,859.02/28,939.86
  6. Step 6: Final answer
    x = 26,057.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.