Home / 27,770.12-38,321.81-15,837.30

Finding the Fourth Proportional to 27,770.12, 38,321.81 and 15,837.30

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Solution

The fourth proportional to 27,770.12, 38,321.81 and 15,837.30 is: 21,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,770.12 : 38,321.81 = 15,837.30 : x
  2. Step 2: Convert to fraction form
    27,770.12/38,321.81 = 15,837.30/x
  3. Step 3: Cross multiply
    27,770.12x = 38,321.81 × 15,837.30
  4. Step 4: Simplify right side
    27,770.12x = 606,914,001.51
  5. Step 5: Solve for x
    x = 606,914,001.51/27,770.12
  6. Step 6: Final answer
    x = 21,854.93

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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.