Home / 38,878.72-53,652.96-21,882.40

Finding the Fourth Proportional to 38,878.72, 53,652.96 and 21,882.40

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Solution

The fourth proportional to 38,878.72, 53,652.96 and 21,882.40 is: 30,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,878.72 : 53,652.96 = 21,882.40 : x
  2. Step 2: Convert to fraction form
    38,878.72/53,652.96 = 21,882.40/x
  3. Step 3: Cross multiply
    38,878.72x = 53,652.96 × 21,882.40
  4. Step 4: Simplify right side
    38,878.72x = 1,174,055,531.90
  5. Step 5: Solve for x
    x = 1,174,055,531.90/38,878.72
  6. Step 6: Final answer
    x = 30,197.90

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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.