Home / 21,948.68-30,288.62-12,516.68

Finding the Fourth Proportional to 21,948.68, 30,288.62 and 12,516.68

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Solution

The fourth proportional to 21,948.68, 30,288.62 and 12,516.68 is: 17,272.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.68 : 30,288.62 = 12,516.68 : x
  2. Step 2: Convert to fraction form
    21,948.68/30,288.62 = 12,516.68/x
  3. Step 3: Cross multiply
    21,948.68x = 30,288.62 × 12,516.68
  4. Step 4: Simplify right side
    21,948.68x = 379,112,964.18
  5. Step 5: Solve for x
    x = 379,112,964.18/21,948.68
  6. Step 6: Final answer
    x = 17,272.70

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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.