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Finding the Fourth Proportional to 34,199.80, 51,299.70 and 12,005.80

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Solution

The fourth proportional to 34,199.80, 51,299.70 and 12,005.80 is: 18,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,199.80 : 51,299.70 = 12,005.80 : x
  2. Step 2: Convert to fraction form
    34,199.80/51,299.70 = 12,005.80/x
  3. Step 3: Cross multiply
    34,199.80x = 51,299.70 × 12,005.80
  4. Step 4: Simplify right side
    34,199.80x = 615,893,938.26
  5. Step 5: Solve for x
    x = 615,893,938.26/34,199.80
  6. Step 6: Final answer
    x = 18,008.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.