Home / 27,988.20-38,622.82-15,412.84

Finding the Fourth Proportional to 27,988.20, 38,622.82 and 15,412.84

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Solution

The fourth proportional to 27,988.20, 38,622.82 and 15,412.84 is: 21,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.20 : 38,622.82 = 15,412.84 : x
  2. Step 2: Convert to fraction form
    27,988.20/38,622.82 = 15,412.84/x
  3. Step 3: Cross multiply
    27,988.20x = 38,622.82 × 15,412.84
  4. Step 4: Simplify right side
    27,988.20x = 595,287,345.01
  5. Step 5: Solve for x
    x = 595,287,345.01/27,988.20
  6. Step 6: Final answer
    x = 21,269.23

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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.