Home / 15,348.08-21,180.13-8,542.06

Finding the Fourth Proportional to 15,348.08, 21,180.13 and 8,542.06

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Solution

The fourth proportional to 15,348.08, 21,180.13 and 8,542.06 is: 11,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.08 : 21,180.13 = 8,542.06 : x
  2. Step 2: Convert to fraction form
    15,348.08/21,180.13 = 8,542.06/x
  3. Step 3: Cross multiply
    15,348.08x = 21,180.13 × 8,542.06
  4. Step 4: Simplify right side
    15,348.08x = 180,921,915.01
  5. Step 5: Solve for x
    x = 180,921,915.01/15,348.08
  6. Step 6: Final answer
    x = 11,787.92

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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.