Home / 27,622.14-38,118.80-15,685.72

Finding the Fourth Proportional to 27,622.14, 38,118.80 and 15,685.72

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Solution

The fourth proportional to 27,622.14, 38,118.80 and 15,685.72 is: 21,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,622.14 : 38,118.80 = 15,685.72 : x
  2. Step 2: Convert to fraction form
    27,622.14/38,118.80 = 15,685.72/x
  3. Step 3: Cross multiply
    27,622.14x = 38,118.80 × 15,685.72
  4. Step 4: Simplify right side
    27,622.14x = 597,920,823.54
  5. Step 5: Solve for x
    x = 597,920,823.54/27,622.14
  6. Step 6: Final answer
    x = 21,646.43

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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.