Home / 20,899.18-28,841.70-11,468.08

Finding the Fourth Proportional to 20,899.18, 28,841.70 and 11,468.08

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Solution

The fourth proportional to 20,899.18, 28,841.70 and 11,468.08 is: 15,826.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.18 : 28,841.70 = 11,468.08 : x
  2. Step 2: Convert to fraction form
    20,899.18/28,841.70 = 11,468.08/x
  3. Step 3: Cross multiply
    20,899.18x = 28,841.70 × 11,468.08
  4. Step 4: Simplify right side
    20,899.18x = 330,758,922.94
  5. Step 5: Solve for x
    x = 330,758,922.94/20,899.18
  6. Step 6: Final answer
    x = 15,826.41

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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.