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Finding the Fourth Proportional to 18,109.68, 24,983.64 and 12,510.96

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Solution

The fourth proportional to 18,109.68, 24,983.64 and 12,510.96 is: 17,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.68 : 24,983.64 = 12,510.96 : x
  2. Step 2: Convert to fraction form
    18,109.68/24,983.64 = 12,510.96/x
  3. Step 3: Cross multiply
    18,109.68x = 24,983.64 × 12,510.96
  4. Step 4: Simplify right side
    18,109.68x = 312,569,320.69
  5. Step 5: Solve for x
    x = 312,569,320.69/18,109.68
  6. Step 6: Final answer
    x = 17,259.79

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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.