Home / 12,689.83-19,034.75-3,924.55

Finding the Fourth Proportional to 12,689.83, 19,034.75 and 3,924.55

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Solution

The fourth proportional to 12,689.83, 19,034.75 and 3,924.55 is: 5,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.83 : 19,034.75 = 3,924.55 : x
  2. Step 2: Convert to fraction form
    12,689.83/19,034.75 = 3,924.55/x
  3. Step 3: Cross multiply
    12,689.83x = 19,034.75 × 3,924.55
  4. Step 4: Simplify right side
    12,689.83x = 74,702,828.11
  5. Step 5: Solve for x
    x = 74,702,828.11/12,689.83
  6. Step 6: Final answer
    x = 5,886.83

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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.