Home / 10,639.90-15,960.96-4,071.58

Finding the Fourth Proportional to 10,639.90, 15,960.96 and 4,071.58

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Solution

The fourth proportional to 10,639.90, 15,960.96 and 4,071.58 is: 6,107.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.90 : 15,960.96 = 4,071.58 : x
  2. Step 2: Convert to fraction form
    10,639.90/15,960.96 = 4,071.58/x
  3. Step 3: Cross multiply
    10,639.90x = 15,960.96 × 4,071.58
  4. Step 4: Simplify right side
    10,639.90x = 64,986,325.52
  5. Step 5: Solve for x
    x = 64,986,325.52/10,639.90
  6. Step 6: Final answer
    x = 6,107.79

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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.