Home / 14,695.10-20,279.58-7,981

Finding the Fourth Proportional to 14,695.10, 20,279.58 and 7,981

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Solution

The fourth proportional to 14,695.10, 20,279.58 and 7,981 is: 11,013.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.10 : 20,279.58 = 7,981 : x
  2. Step 2: Convert to fraction form
    14,695.10/20,279.58 = 7,981/x
  3. Step 3: Cross multiply
    14,695.10x = 20,279.58 × 7,981
  4. Step 4: Simplify right side
    14,695.10x = 161,851,327.98
  5. Step 5: Solve for x
    x = 161,851,327.98/14,695.10
  6. Step 6: Final answer
    x = 11,013.97

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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.