Home / 12,433.40-18,640.78-7,501.87

Finding the Fourth Proportional to 12,433.40, 18,640.78 and 7,501.87

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Solution

The fourth proportional to 12,433.40, 18,640.78 and 7,501.87 is: 11,247.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,433.40 : 18,640.78 = 7,501.87 : x
  2. Step 2: Convert to fraction form
    12,433.40/18,640.78 = 7,501.87/x
  3. Step 3: Cross multiply
    12,433.40x = 18,640.78 × 7,501.87
  4. Step 4: Simplify right side
    12,433.40x = 139,840,642.90
  5. Step 5: Solve for x
    x = 139,840,642.90/12,433.40
  6. Step 6: Final answer
    x = 11,247.18

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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.