Home / 28,257.30-38,999.43-16,319.70

Finding the Fourth Proportional to 28,257.30, 38,999.43 and 16,319.70

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Solution

The fourth proportional to 28,257.30, 38,999.43 and 16,319.70 is: 22,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.30 : 38,999.43 = 16,319.70 : x
  2. Step 2: Convert to fraction form
    28,257.30/38,999.43 = 16,319.70/x
  3. Step 3: Cross multiply
    28,257.30x = 38,999.43 × 16,319.70
  4. Step 4: Simplify right side
    28,257.30x = 636,458,997.77
  5. Step 5: Solve for x
    x = 636,458,997.77/28,257.30
  6. Step 6: Final answer
    x = 22,523.70

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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.