Home / 11,887.22-16,401.65-7,640.50

Finding the Fourth Proportional to 11,887.22, 16,401.65 and 7,640.50

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Solution

The fourth proportional to 11,887.22, 16,401.65 and 7,640.50 is: 10,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.22 : 16,401.65 = 7,640.50 : x
  2. Step 2: Convert to fraction form
    11,887.22/16,401.65 = 7,640.50/x
  3. Step 3: Cross multiply
    11,887.22x = 16,401.65 × 7,640.50
  4. Step 4: Simplify right side
    11,887.22x = 125,316,806.83
  5. Step 5: Solve for x
    x = 125,316,806.83/11,887.22
  6. Step 6: Final answer
    x = 10,542.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.