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Finding the Fourth Proportional to 14,703.56, 20,291 and 7,989.18

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Solution

The fourth proportional to 14,703.56, 20,291 and 7,989.18 is: 11,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.56 : 20,291 = 7,989.18 : x
  2. Step 2: Convert to fraction form
    14,703.56/20,291 = 7,989.18/x
  3. Step 3: Cross multiply
    14,703.56x = 20,291 × 7,989.18
  4. Step 4: Simplify right side
    14,703.56x = 162,108,451.38
  5. Step 5: Solve for x
    x = 162,108,451.38/14,703.56
  6. Step 6: Final answer
    x = 11,025.12

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Double scale
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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.