Home / 15,581.94-21,506.29-8,868.02

Finding the Fourth Proportional to 15,581.94, 21,506.29 and 8,868.02

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Solution

The fourth proportional to 15,581.94, 21,506.29 and 8,868.02 is: 12,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.94 : 21,506.29 = 8,868.02 : x
  2. Step 2: Convert to fraction form
    15,581.94/21,506.29 = 8,868.02/x
  3. Step 3: Cross multiply
    15,581.94x = 21,506.29 × 8,868.02
  4. Step 4: Simplify right side
    15,581.94x = 190,718,209.85
  5. Step 5: Solve for x
    x = 190,718,209.85/15,581.94
  6. Step 6: Final answer
    x = 12,239.70

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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.