Home / 13,331.76-18,401.40-7,667.13

Finding the Fourth Proportional to 13,331.76, 18,401.40 and 7,667.13

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Solution

The fourth proportional to 13,331.76, 18,401.40 and 7,667.13 is: 10,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.76 : 18,401.40 = 7,667.13 : x
  2. Step 2: Convert to fraction form
    13,331.76/18,401.40 = 7,667.13/x
  3. Step 3: Cross multiply
    13,331.76x = 18,401.40 × 7,667.13
  4. Step 4: Simplify right side
    13,331.76x = 141,085,887.65
  5. Step 5: Solve for x
    x = 141,085,887.65/13,331.76
  6. Step 6: Final answer
    x = 10,582.69

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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.