Home / 21,886.54-30,202.18-12,934.87

Finding the Fourth Proportional to 21,886.54, 30,202.18 and 12,934.87

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Solution

The fourth proportional to 21,886.54, 30,202.18 and 12,934.87 is: 17,849.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.54 : 30,202.18 = 12,934.87 : x
  2. Step 2: Convert to fraction form
    21,886.54/30,202.18 = 12,934.87/x
  3. Step 3: Cross multiply
    21,886.54x = 30,202.18 × 12,934.87
  4. Step 4: Simplify right side
    21,886.54x = 390,661,406.82
  5. Step 5: Solve for x
    x = 390,661,406.82/21,886.54
  6. Step 6: Final answer
    x = 17,849.39

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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.