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Finding the Fourth Proportional to 18,814.92, 25,967.28 and 10,859.88

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Solution

The fourth proportional to 18,814.92, 25,967.28 and 10,859.88 is: 14,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.92 : 25,967.28 = 10,859.88 : x
  2. Step 2: Convert to fraction form
    18,814.92/25,967.28 = 10,859.88/x
  3. Step 3: Cross multiply
    18,814.92x = 25,967.28 × 10,859.88
  4. Step 4: Simplify right side
    18,814.92x = 282,001,544.73
  5. Step 5: Solve for x
    x = 282,001,544.73/18,814.92
  6. Step 6: Final answer
    x = 14,988.19

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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.