Home / 22,381.59-30,885.09-12,821.51

Finding the Fourth Proportional to 22,381.59, 30,885.09 and 12,821.51

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Solution

The fourth proportional to 22,381.59, 30,885.09 and 12,821.51 is: 17,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,381.59 : 30,885.09 = 12,821.51 : x
  2. Step 2: Convert to fraction form
    22,381.59/30,885.09 = 12,821.51/x
  3. Step 3: Cross multiply
    22,381.59x = 30,885.09 × 12,821.51
  4. Step 4: Simplify right side
    22,381.59x = 395,993,426.18
  5. Step 5: Solve for x
    x = 395,993,426.18/22,381.59
  6. Step 6: Final answer
    x = 17,692.82

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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.