Home / 12,237.12-18,344.32-6,386.72

Finding the Fourth Proportional to 12,237.12, 18,344.32 and 6,386.72

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Solution

The fourth proportional to 12,237.12, 18,344.32 and 6,386.72 is: 9,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.12 : 18,344.32 = 6,386.72 : x
  2. Step 2: Convert to fraction form
    12,237.12/18,344.32 = 6,386.72/x
  3. Step 3: Cross multiply
    12,237.12x = 18,344.32 × 6,386.72
  4. Step 4: Simplify right side
    12,237.12x = 117,160,035.43
  5. Step 5: Solve for x
    x = 117,160,035.43/12,237.12
  6. Step 6: Final answer
    x = 9,574.15

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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.