Home / 22,280.42-30,745.62-12,721.40

Finding the Fourth Proportional to 22,280.42, 30,745.62 and 12,721.40

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Solution

The fourth proportional to 22,280.42, 30,745.62 and 12,721.40 is: 17,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.42 : 30,745.62 = 12,721.40 : x
  2. Step 2: Convert to fraction form
    22,280.42/30,745.62 = 12,721.40/x
  3. Step 3: Cross multiply
    22,280.42x = 30,745.62 × 12,721.40
  4. Step 4: Simplify right side
    22,280.42x = 391,127,330.27
  5. Step 5: Solve for x
    x = 391,127,330.27/22,280.42
  6. Step 6: Final answer
    x = 17,554.76

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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.