Home / 13,278.48-18,316.71-8,301.84

Finding the Fourth Proportional to 13,278.48, 18,316.71 and 8,301.84

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Solution

The fourth proportional to 13,278.48, 18,316.71 and 8,301.84 is: 11,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.48 : 18,316.71 = 8,301.84 : x
  2. Step 2: Convert to fraction form
    13,278.48/18,316.71 = 8,301.84/x
  3. Step 3: Cross multiply
    13,278.48x = 18,316.71 × 8,301.84
  4. Step 4: Simplify right side
    13,278.48x = 152,062,395.75
  5. Step 5: Solve for x
    x = 152,062,395.75/13,278.48
  6. Step 6: Final answer
    x = 11,451.79

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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.