Home / 20,899.59-28,841.36-11,468.31

Finding the Fourth Proportional to 20,899.59, 28,841.36 and 11,468.31

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Solution

The fourth proportional to 20,899.59, 28,841.36 and 11,468.31 is: 15,826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.59 : 28,841.36 = 11,468.31 : x
  2. Step 2: Convert to fraction form
    20,899.59/28,841.36 = 11,468.31/x
  3. Step 3: Cross multiply
    20,899.59x = 28,841.36 × 11,468.31
  4. Step 4: Simplify right side
    20,899.59x = 330,761,599.96
  5. Step 5: Solve for x
    x = 330,761,599.96/20,899.59
  6. Step 6: Final answer
    x = 15,826.22

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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.