Home / 20,335.30-28,059.38-12,776.27

Finding the Fourth Proportional to 20,335.30, 28,059.38 and 12,776.27

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Solution

The fourth proportional to 20,335.30, 28,059.38 and 12,776.27 is: 17,629.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.30 : 28,059.38 = 12,776.27 : x
  2. Step 2: Convert to fraction form
    20,335.30/28,059.38 = 12,776.27/x
  3. Step 3: Cross multiply
    20,335.30x = 28,059.38 × 12,776.27
  4. Step 4: Simplify right side
    20,335.30x = 358,494,115.19
  5. Step 5: Solve for x
    x = 358,494,115.19/20,335.30
  6. Step 6: Final answer
    x = 17,629.15

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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.