Home / 21,824.17-30,120.98-12,873.87

Finding the Fourth Proportional to 21,824.17, 30,120.98 and 12,873.87

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Solution

The fourth proportional to 21,824.17, 30,120.98 and 12,873.87 is: 17,768.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.17 : 30,120.98 = 12,873.87 : x
  2. Step 2: Convert to fraction form
    21,824.17/30,120.98 = 12,873.87/x
  3. Step 3: Cross multiply
    21,824.17x = 30,120.98 × 12,873.87
  4. Step 4: Simplify right side
    21,824.17x = 387,773,516.42
  5. Step 5: Solve for x
    x = 387,773,516.42/21,824.17
  6. Step 6: Final answer
    x = 17,768.08

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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.