Home / 28,073.64-38,725.38-18,137.64

Finding the Fourth Proportional to 28,073.64, 38,725.38 and 18,137.64

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Solution

The fourth proportional to 28,073.64, 38,725.38 and 18,137.64 is: 25,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073.64 : 38,725.38 = 18,137.64 : x
  2. Step 2: Convert to fraction form
    28,073.64/38,725.38 = 18,137.64/x
  3. Step 3: Cross multiply
    28,073.64x = 38,725.38 × 18,137.64
  4. Step 4: Simplify right side
    28,073.64x = 702,387,001.30
  5. Step 5: Solve for x
    x = 702,387,001.30/28,073.64
  6. Step 6: Final answer
    x = 25,019.45

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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.