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Finding the Fourth Proportional to 22,702.67, 31,329.21 and 12,630.72

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Solution

The fourth proportional to 22,702.67, 31,329.21 and 12,630.72 is: 17,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,702.67 : 31,329.21 = 12,630.72 : x
  2. Step 2: Convert to fraction form
    22,702.67/31,329.21 = 12,630.72/x
  3. Step 3: Cross multiply
    22,702.67x = 31,329.21 × 12,630.72
  4. Step 4: Simplify right side
    22,702.67x = 395,710,479.33
  5. Step 5: Solve for x
    x = 395,710,479.33/22,702.67
  6. Step 6: Final answer
    x = 17,430.13

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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.