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Finding the Fourth Proportional to 34,139.63, 51,218.08 and 9,515.63

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Solution

The fourth proportional to 34,139.63, 51,218.08 and 9,515.63 is: 14,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,139.63 : 51,218.08 = 9,515.63 : x
  2. Step 2: Convert to fraction form
    34,139.63/51,218.08 = 9,515.63/x
  3. Step 3: Cross multiply
    34,139.63x = 51,218.08 × 9,515.63
  4. Step 4: Simplify right side
    34,139.63x = 487,372,042.50
  5. Step 5: Solve for x
    x = 487,372,042.50/34,139.63
  6. Step 6: Final answer
    x = 14,275.85

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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.