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Finding the Fourth Proportional to 34,266.40, 51,344.40 and 19,431.20

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Solution

The fourth proportional to 34,266.40, 51,344.40 and 19,431.20 is: 29,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,266.40 : 51,344.40 = 19,431.20 : x
  2. Step 2: Convert to fraction form
    34,266.40/51,344.40 = 19,431.20/x
  3. Step 3: Cross multiply
    34,266.40x = 51,344.40 × 19,431.20
  4. Step 4: Simplify right side
    34,266.40x = 997,683,305.28
  5. Step 5: Solve for x
    x = 997,683,305.28/34,266.40
  6. Step 6: Final answer
    x = 29,115.50

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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.