Home / 20,579.65-28,398.44-12,082.12

Finding the Fourth Proportional to 20,579.65, 28,398.44 and 12,082.12

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Solution

The fourth proportional to 20,579.65, 28,398.44 and 12,082.12 is: 16,672.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.65 : 28,398.44 = 12,082.12 : x
  2. Step 2: Convert to fraction form
    20,579.65/28,398.44 = 12,082.12/x
  3. Step 3: Cross multiply
    20,579.65x = 28,398.44 × 12,082.12
  4. Step 4: Simplify right side
    20,579.65x = 343,113,319.10
  5. Step 5: Solve for x
    x = 343,113,319.10/20,579.65
  6. Step 6: Final answer
    x = 16,672.46

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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.