Home / 13,334.77-18,402.75-7,955.78

Finding the Fourth Proportional to 13,334.77, 18,402.75 and 7,955.78

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Solution

The fourth proportional to 13,334.77, 18,402.75 and 7,955.78 is: 10,979.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,334.77 : 18,402.75 = 7,955.78 : x
  2. Step 2: Convert to fraction form
    13,334.77/18,402.75 = 7,955.78/x
  3. Step 3: Cross multiply
    13,334.77x = 18,402.75 × 7,955.78
  4. Step 4: Simplify right side
    13,334.77x = 146,408,230.40
  5. Step 5: Solve for x
    x = 146,408,230.40/13,334.77
  6. Step 6: Final answer
    x = 10,979.44

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Double scale
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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.