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Finding the Fourth Proportional to 12,339.10, 18,510.19 and 4,019.96

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Solution

The fourth proportional to 12,339.10, 18,510.19 and 4,019.96 is: 6,030.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.10 : 18,510.19 = 4,019.96 : x
  2. Step 2: Convert to fraction form
    12,339.10/18,510.19 = 4,019.96/x
  3. Step 3: Cross multiply
    12,339.10x = 18,510.19 × 4,019.96
  4. Step 4: Simplify right side
    12,339.10x = 74,410,110.74
  5. Step 5: Solve for x
    x = 74,410,110.74/12,339.10
  6. Step 6: Final answer
    x = 6,030.44

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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.