Home / 25,428.48-38,117.37-12,078.06

Finding the Fourth Proportional to 25,428.48, 38,117.37 and 12,078.06

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Solution

The fourth proportional to 25,428.48, 38,117.37 and 12,078.06 is: 18,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.48 : 38,117.37 = 12,078.06 : x
  2. Step 2: Convert to fraction form
    25,428.48/38,117.37 = 12,078.06/x
  3. Step 3: Cross multiply
    25,428.48x = 38,117.37 × 12,078.06
  4. Step 4: Simplify right side
    25,428.48x = 460,383,881.90
  5. Step 5: Solve for x
    x = 460,383,881.90/25,428.48
  6. Step 6: Final answer
    x = 18,105.05

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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.