Home / 20,577.08-28,396.13-12,077.70

Finding the Fourth Proportional to 20,577.08, 28,396.13 and 12,077.70

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Solution

The fourth proportional to 20,577.08, 28,396.13 and 12,077.70 is: 16,667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.08 : 28,396.13 = 12,077.70 : x
  2. Step 2: Convert to fraction form
    20,577.08/28,396.13 = 12,077.70/x
  3. Step 3: Cross multiply
    20,577.08x = 28,396.13 × 12,077.70
  4. Step 4: Simplify right side
    20,577.08x = 342,959,878.91
  5. Step 5: Solve for x
    x = 342,959,878.91/20,577.08
  6. Step 6: Final answer
    x = 16,667.09

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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.