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Finding the Fourth Proportional to 29,560.66, 40,787.74 and 18,809.80

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Solution

The fourth proportional to 29,560.66, 40,787.74 and 18,809.80 is: 25,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,560.66 : 40,787.74 = 18,809.80 : x
  2. Step 2: Convert to fraction form
    29,560.66/40,787.74 = 18,809.80/x
  3. Step 3: Cross multiply
    29,560.66x = 40,787.74 × 18,809.80
  4. Step 4: Simplify right side
    29,560.66x = 767,209,231.85
  5. Step 5: Solve for x
    x = 767,209,231.85/29,560.66
  6. Step 6: Final answer
    x = 25,953.72

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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.