Home / 18,828.78-25,987.41-10,870.53

Finding the Fourth Proportional to 18,828.78, 25,987.41 and 10,870.53

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Solution

The fourth proportional to 18,828.78, 25,987.41 and 10,870.53 is: 15,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.78 : 25,987.41 = 10,870.53 : x
  2. Step 2: Convert to fraction form
    18,828.78/25,987.41 = 10,870.53/x
  3. Step 3: Cross multiply
    18,828.78x = 25,987.41 × 10,870.53
  4. Step 4: Simplify right side
    18,828.78x = 282,496,920.03
  5. Step 5: Solve for x
    x = 282,496,920.03/18,828.78
  6. Step 6: Final answer
    x = 15,003.46

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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.