Home / 20,899.75-28,841.70-11,468.35

Finding the Fourth Proportional to 20,899.75, 28,841.70 and 11,468.35

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Solution

The fourth proportional to 20,899.75, 28,841.70 and 11,468.35 is: 15,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.75 : 28,841.70 = 11,468.35 : x
  2. Step 2: Convert to fraction form
    20,899.75/28,841.70 = 11,468.35/x
  3. Step 3: Cross multiply
    20,899.75x = 28,841.70 × 11,468.35
  4. Step 4: Simplify right side
    20,899.75x = 330,766,710.20
  5. Step 5: Solve for x
    x = 330,766,710.20/20,899.75
  6. Step 6: Final answer
    x = 15,826.35

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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.