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Finding the Fourth Proportional to 14,703.62, 20,291.13 and 7,989.29

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Solution

The fourth proportional to 14,703.62, 20,291.13 and 7,989.29 is: 11,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.62 : 20,291.13 = 7,989.29 : x
  2. Step 2: Convert to fraction form
    14,703.62/20,291.13 = 7,989.29/x
  3. Step 3: Cross multiply
    14,703.62x = 20,291.13 × 7,989.29
  4. Step 4: Simplify right side
    14,703.62x = 162,111,620.54
  5. Step 5: Solve for x
    x = 162,111,620.54/14,703.62
  6. Step 6: Final answer
    x = 11,025.29

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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.