Home / 13,278.33-18,330.71-10,287.41

Finding the Fourth Proportional to 13,278.33, 18,330.71 and 10,287.41

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Solution

The fourth proportional to 13,278.33, 18,330.71 and 10,287.41 is: 14,201.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.33 : 18,330.71 = 10,287.41 : x
  2. Step 2: Convert to fraction form
    13,278.33/18,330.71 = 10,287.41/x
  3. Step 3: Cross multiply
    13,278.33x = 18,330.71 × 10,287.41
  4. Step 4: Simplify right side
    13,278.33x = 188,575,386.27
  5. Step 5: Solve for x
    x = 188,575,386.27/13,278.33
  6. Step 6: Final answer
    x = 14,201.74

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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.