Home / 18,123.60-27,175.68-5,638.32

Finding the Fourth Proportional to 18,123.60, 27,175.68 and 5,638.32

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Solution

The fourth proportional to 18,123.60, 27,175.68 and 5,638.32 is: 8,454.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.60 : 27,175.68 = 5,638.32 : x
  2. Step 2: Convert to fraction form
    18,123.60/27,175.68 = 5,638.32/x
  3. Step 3: Cross multiply
    18,123.60x = 27,175.68 × 5,638.32
  4. Step 4: Simplify right side
    18,123.60x = 153,225,180.06
  5. Step 5: Solve for x
    x = 153,225,180.06/18,123.60
  6. Step 6: Final answer
    x = 8,454.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.