Home / 13,346.31-18,418.28-7,378.53

Finding the Fourth Proportional to 13,346.31, 18,418.28 and 7,378.53

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Solution

The fourth proportional to 13,346.31, 18,418.28 and 7,378.53 is: 10,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.31 : 18,418.28 = 7,378.53 : x
  2. Step 2: Convert to fraction form
    13,346.31/18,418.28 = 7,378.53/x
  3. Step 3: Cross multiply
    13,346.31x = 18,418.28 × 7,378.53
  4. Step 4: Simplify right side
    13,346.31x = 135,899,794.64
  5. Step 5: Solve for x
    x = 135,899,794.64/13,346.31
  6. Step 6: Final answer
    x = 10,182.57

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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.