Home / 27,921.54-38,531.85-15,347.10

Finding the Fourth Proportional to 27,921.54, 38,531.85 and 15,347.10

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Solution

The fourth proportional to 27,921.54, 38,531.85 and 15,347.10 is: 21,179.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.54 : 38,531.85 = 15,347.10 : x
  2. Step 2: Convert to fraction form
    27,921.54/38,531.85 = 15,347.10/x
  3. Step 3: Cross multiply
    27,921.54x = 38,531.85 × 15,347.10
  4. Step 4: Simplify right side
    27,921.54x = 591,352,155.14
  5. Step 5: Solve for x
    x = 591,352,155.14/27,921.54
  6. Step 6: Final answer
    x = 21,179.07

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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.