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Finding the Fourth Proportional to 18,659.04, 27,959.76 and 9,431.52

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Solution

The fourth proportional to 18,659.04, 27,959.76 and 9,431.52 is: 14,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.04 : 27,959.76 = 9,431.52 : x
  2. Step 2: Convert to fraction form
    18,659.04/27,959.76 = 9,431.52/x
  3. Step 3: Cross multiply
    18,659.04x = 27,959.76 × 9,431.52
  4. Step 4: Simplify right side
    18,659.04x = 263,703,035.64
  5. Step 5: Solve for x
    x = 263,703,035.64/18,659.04
  6. Step 6: Final answer
    x = 14,132.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.