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Finding the Fourth Proportional to 29,630.84, 40,876.60 and 21,134.84

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Solution

The fourth proportional to 29,630.84, 40,876.60 and 21,134.84 is: 29,156.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,630.84 : 40,876.60 = 21,134.84 : x
  2. Step 2: Convert to fraction form
    29,630.84/40,876.60 = 21,134.84/x
  3. Step 3: Cross multiply
    29,630.84x = 40,876.60 × 21,134.84
  4. Step 4: Simplify right side
    29,630.84x = 863,920,400.74
  5. Step 5: Solve for x
    x = 863,920,400.74/29,630.84
  6. Step 6: Final answer
    x = 29,156.12

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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.