Home / 20,827.79-28,742.23-11,267.65

Finding the Fourth Proportional to 20,827.79, 28,742.23 and 11,267.65

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Solution

The fourth proportional to 20,827.79, 28,742.23 and 11,267.65 is: 15,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.79 : 28,742.23 = 11,267.65 : x
  2. Step 2: Convert to fraction form
    20,827.79/28,742.23 = 11,267.65/x
  3. Step 3: Cross multiply
    20,827.79x = 28,742.23 × 11,267.65
  4. Step 4: Simplify right side
    20,827.79x = 323,857,280.56
  5. Step 5: Solve for x
    x = 323,857,280.56/20,827.79
  6. Step 6: Final answer
    x = 15,549.29

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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.