Home / 28,878.35-39,849.48-16,129.76

Finding the Fourth Proportional to 28,878.35, 39,849.48 and 16,129.76

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Solution

The fourth proportional to 28,878.35, 39,849.48 and 16,129.76 is: 22,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.35 : 39,849.48 = 16,129.76 : x
  2. Step 2: Convert to fraction form
    28,878.35/39,849.48 = 16,129.76/x
  3. Step 3: Cross multiply
    28,878.35x = 39,849.48 × 16,129.76
  4. Step 4: Simplify right side
    28,878.35x = 642,762,349.28
  5. Step 5: Solve for x
    x = 642,762,349.28/28,878.35
  6. Step 6: Final answer
    x = 22,257.59

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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.