Home / 25,870.06-38,785.31-11,820.34

Finding the Fourth Proportional to 25,870.06, 38,785.31 and 11,820.34

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Solution

The fourth proportional to 25,870.06, 38,785.31 and 11,820.34 is: 17,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,870.06 : 38,785.31 = 11,820.34 : x
  2. Step 2: Convert to fraction form
    25,870.06/38,785.31 = 11,820.34/x
  3. Step 3: Cross multiply
    25,870.06x = 38,785.31 × 11,820.34
  4. Step 4: Simplify right side
    25,870.06x = 458,455,551.21
  5. Step 5: Solve for x
    x = 458,455,551.21/25,870.06
  6. Step 6: Final answer
    x = 17,721.47

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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.