Home / 22,381.11-30,886.11-12,309.30

Finding the Fourth Proportional to 22,381.11, 30,886.11 and 12,309.30

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Solution

The fourth proportional to 22,381.11, 30,886.11 and 12,309.30 is: 16,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,381.11 : 30,886.11 = 12,309.30 : x
  2. Step 2: Convert to fraction form
    22,381.11/30,886.11 = 12,309.30/x
  3. Step 3: Cross multiply
    22,381.11x = 30,886.11 × 12,309.30
  4. Step 4: Simplify right side
    22,381.11x = 380,186,393.82
  5. Step 5: Solve for x
    x = 380,186,393.82/22,381.11
  6. Step 6: Final answer
    x = 16,986.93

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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.