Home / 38,785.01-53,517.48-21,786

Finding the Fourth Proportional to 38,785.01, 53,517.48 and 21,786

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Solution

The fourth proportional to 38,785.01, 53,517.48 and 21,786 is: 30,061.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.01 : 53,517.48 = 21,786 : x
  2. Step 2: Convert to fraction form
    38,785.01/53,517.48 = 21,786/x
  3. Step 3: Cross multiply
    38,785.01x = 53,517.48 × 21,786
  4. Step 4: Simplify right side
    38,785.01x = 1,165,931,819.28
  5. Step 5: Solve for x
    x = 1,165,931,819.28/38,785.01
  6. Step 6: Final answer
    x = 30,061.40

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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.