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Finding the Fourth Proportional to 12,793.16, 17,660.49 and 9,019.40

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Solution

The fourth proportional to 12,793.16, 17,660.49 and 9,019.40 is: 12,450.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.16 : 17,660.49 = 9,019.40 : x
  2. Step 2: Convert to fraction form
    12,793.16/17,660.49 = 9,019.40/x
  3. Step 3: Cross multiply
    12,793.16x = 17,660.49 × 9,019.40
  4. Step 4: Simplify right side
    12,793.16x = 159,287,023.51
  5. Step 5: Solve for x
    x = 159,287,023.51/12,793.16
  6. Step 6: Final answer
    x = 12,450.95

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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.