Home / 22,828.78-31,506.85-13,138.04

Finding the Fourth Proportional to 22,828.78, 31,506.85 and 13,138.04

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Solution

The fourth proportional to 22,828.78, 31,506.85 and 13,138.04 is: 18,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,828.78 : 31,506.85 = 13,138.04 : x
  2. Step 2: Convert to fraction form
    22,828.78/31,506.85 = 13,138.04/x
  3. Step 3: Cross multiply
    22,828.78x = 31,506.85 × 13,138.04
  4. Step 4: Simplify right side
    22,828.78x = 413,938,255.57
  5. Step 5: Solve for x
    x = 413,938,255.57/22,828.78
  6. Step 6: Final answer
    x = 18,132.30

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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.