Home / 15,436.37-21,301.13-8,722.28

Finding the Fourth Proportional to 15,436.37, 21,301.13 and 8,722.28

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Solution

The fourth proportional to 15,436.37, 21,301.13 and 8,722.28 is: 12,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.37 : 21,301.13 = 8,722.28 : x
  2. Step 2: Convert to fraction form
    15,436.37/21,301.13 = 8,722.28/x
  3. Step 3: Cross multiply
    15,436.37x = 21,301.13 × 8,722.28
  4. Step 4: Simplify right side
    15,436.37x = 185,794,335.48
  5. Step 5: Solve for x
    x = 185,794,335.48/15,436.37
  6. Step 6: Final answer
    x = 12,036.15

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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.