Home / 28,809.74-39,767.28-16,876.88

Finding the Fourth Proportional to 28,809.74, 39,767.28 and 16,876.88

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Solution

The fourth proportional to 28,809.74, 39,767.28 and 16,876.88 is: 23,295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.74 : 39,767.28 = 16,876.88 : x
  2. Step 2: Convert to fraction form
    28,809.74/39,767.28 = 16,876.88/x
  3. Step 3: Cross multiply
    28,809.74x = 39,767.28 × 16,876.88
  4. Step 4: Simplify right side
    28,809.74x = 671,147,612.49
  5. Step 5: Solve for x
    x = 671,147,612.49/28,809.74
  6. Step 6: Final answer
    x = 23,295.86

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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.