Home / 38,742.64-53,467.32-21,748.12

Finding the Fourth Proportional to 38,742.64, 53,467.32 and 21,748.12

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Solution

The fourth proportional to 38,742.64, 53,467.32 and 21,748.12 is: 30,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,742.64 : 53,467.32 = 21,748.12 : x
  2. Step 2: Convert to fraction form
    38,742.64/53,467.32 = 21,748.12/x
  3. Step 3: Cross multiply
    38,742.64x = 53,467.32 × 21,748.12
  4. Step 4: Simplify right side
    38,742.64x = 1,162,813,691.44
  5. Step 5: Solve for x
    x = 1,162,813,691.44/38,742.64
  6. Step 6: Final answer
    x = 30,013.80

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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.