Home / 19,959.35-29,930.78-6,812.78

Finding the Fourth Proportional to 19,959.35, 29,930.78 and 6,812.78

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Solution

The fourth proportional to 19,959.35, 29,930.78 and 6,812.78 is: 10,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.35 : 29,930.78 = 6,812.78 : x
  2. Step 2: Convert to fraction form
    19,959.35/29,930.78 = 6,812.78/x
  3. Step 3: Cross multiply
    19,959.35x = 29,930.78 × 6,812.78
  4. Step 4: Simplify right side
    19,959.35x = 203,911,686.75
  5. Step 5: Solve for x
    x = 203,911,686.75/19,959.35
  6. Step 6: Final answer
    x = 10,216.35

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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.