Home / 22,721.08-34,083.54-7,138.72

Finding the Fourth Proportional to 22,721.08, 34,083.54 and 7,138.72

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Solution

The fourth proportional to 22,721.08, 34,083.54 and 7,138.72 is: 10,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.08 : 34,083.54 = 7,138.72 : x
  2. Step 2: Convert to fraction form
    22,721.08/34,083.54 = 7,138.72/x
  3. Step 3: Cross multiply
    22,721.08x = 34,083.54 × 7,138.72
  4. Step 4: Simplify right side
    22,721.08x = 243,312,848.67
  5. Step 5: Solve for x
    x = 243,312,848.67/22,721.08
  6. Step 6: Final answer
    x = 10,708.68

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1.5x scale

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.