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Finding the Fourth Proportional to 22,370.93, 30,871.95 and 12,300.40

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Solution

The fourth proportional to 22,370.93, 30,871.95 and 12,300.40 is: 16,974.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,370.93 : 30,871.95 = 12,300.40 : x
  2. Step 2: Convert to fraction form
    22,370.93/30,871.95 = 12,300.40/x
  3. Step 3: Cross multiply
    22,370.93x = 30,871.95 × 12,300.40
  4. Step 4: Simplify right side
    22,370.93x = 379,737,272.28
  5. Step 5: Solve for x
    x = 379,737,272.28/22,370.93
  6. Step 6: Final answer
    x = 16,974.59

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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.