Home / 15,588.20-21,506.38-8,872.15

Finding the Fourth Proportional to 15,588.20, 21,506.38 and 8,872.15

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Solution

The fourth proportional to 15,588.20, 21,506.38 and 8,872.15 is: 12,240.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.20 : 21,506.38 = 8,872.15 : x
  2. Step 2: Convert to fraction form
    15,588.20/21,506.38 = 8,872.15/x
  3. Step 3: Cross multiply
    15,588.20x = 21,506.38 × 8,872.15
  4. Step 4: Simplify right side
    15,588.20x = 190,807,721.79
  5. Step 5: Solve for x
    x = 190,807,721.79/15,588.20
  6. Step 6: Final answer
    x = 12,240.52

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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.