Home / 13,269.59-18,292.79-9,278.31

Finding the Fourth Proportional to 13,269.59, 18,292.79 and 9,278.31

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Solution

The fourth proportional to 13,269.59, 18,292.79 and 9,278.31 is: 12,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.59 : 18,292.79 = 9,278.31 : x
  2. Step 2: Convert to fraction form
    13,269.59/18,292.79 = 9,278.31/x
  3. Step 3: Cross multiply
    13,269.59x = 18,292.79 × 9,278.31
  4. Step 4: Simplify right side
    13,269.59x = 169,726,215.99
  5. Step 5: Solve for x
    x = 169,726,215.99/13,269.59
  6. Step 6: Final answer
    x = 12,790.62

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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.