Home / 13,343.67-18,409.40-10,278.45

Finding the Fourth Proportional to 13,343.67, 18,409.40 and 10,278.45

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Solution

The fourth proportional to 13,343.67, 18,409.40 and 10,278.45 is: 14,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.67 : 18,409.40 = 10,278.45 : x
  2. Step 2: Convert to fraction form
    13,343.67/18,409.40 = 10,278.45/x
  3. Step 3: Cross multiply
    13,343.67x = 18,409.40 × 10,278.45
  4. Step 4: Simplify right side
    13,343.67x = 189,220,046.04
  5. Step 5: Solve for x
    x = 189,220,046.04/13,343.67
  6. Step 6: Final answer
    x = 14,180.51

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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.