Home / 12,391.55-18,585.53-4,071.90

Finding the Fourth Proportional to 12,391.55, 18,585.53 and 4,071.90

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Solution

The fourth proportional to 12,391.55, 18,585.53 and 4,071.90 is: 6,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.55 : 18,585.53 = 4,071.90 : x
  2. Step 2: Convert to fraction form
    12,391.55/18,585.53 = 4,071.90/x
  3. Step 3: Cross multiply
    12,391.55x = 18,585.53 × 4,071.90
  4. Step 4: Simplify right side
    12,391.55x = 75,678,419.61
  5. Step 5: Solve for x
    x = 75,678,419.61/12,391.55
  6. Step 6: Final answer
    x = 6,107.26

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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.