Home / 20,977.72-28,951.49-12,028.13

Finding the Fourth Proportional to 20,977.72, 28,951.49 and 12,028.13

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Solution

The fourth proportional to 20,977.72, 28,951.49 and 12,028.13 is: 16,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.72 : 28,951.49 = 12,028.13 : x
  2. Step 2: Convert to fraction form
    20,977.72/28,951.49 = 12,028.13/x
  3. Step 3: Cross multiply
    20,977.72x = 28,951.49 × 12,028.13
  4. Step 4: Simplify right side
    20,977.72x = 348,232,279.29
  5. Step 5: Solve for x
    x = 348,232,279.29/20,977.72
  6. Step 6: Final answer
    x = 16,600.10

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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.