Home / 25,419.98-38,155.78-12,283.40

Finding the Fourth Proportional to 25,419.98, 38,155.78 and 12,283.40

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Solution

The fourth proportional to 25,419.98, 38,155.78 and 12,283.40 is: 18,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.98 : 38,155.78 = 12,283.40 : x
  2. Step 2: Convert to fraction form
    25,419.98/38,155.78 = 12,283.40/x
  3. Step 3: Cross multiply
    25,419.98x = 38,155.78 × 12,283.40
  4. Step 4: Simplify right side
    25,419.98x = 468,682,708.05
  5. Step 5: Solve for x
    x = 468,682,708.05/25,419.98
  6. Step 6: Final answer
    x = 18,437.57

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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.