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Finding the Fourth Proportional to 34,012.20, 51,019.20 and 10,639.20

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Solution

The fourth proportional to 34,012.20, 51,019.20 and 10,639.20 is: 15,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,012.20 : 51,019.20 = 10,639.20 : x
  2. Step 2: Convert to fraction form
    34,012.20/51,019.20 = 10,639.20/x
  3. Step 3: Cross multiply
    34,012.20x = 51,019.20 × 10,639.20
  4. Step 4: Simplify right side
    34,012.20x = 542,803,472.64
  5. Step 5: Solve for x
    x = 542,803,472.64/34,012.20
  6. Step 6: Final answer
    x = 15,959.08

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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.