Home / 13,291.53-18,342.29-7,323.20

Finding the Fourth Proportional to 13,291.53, 18,342.29 and 7,323.20

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Solution

The fourth proportional to 13,291.53, 18,342.29 and 7,323.20 is: 10,105.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.53 : 18,342.29 = 7,323.20 : x
  2. Step 2: Convert to fraction form
    13,291.53/18,342.29 = 7,323.20/x
  3. Step 3: Cross multiply
    13,291.53x = 18,342.29 × 7,323.20
  4. Step 4: Simplify right side
    13,291.53x = 134,324,129.80
  5. Step 5: Solve for x
    x = 134,324,129.80/13,291.53
  6. Step 6: Final answer
    x = 10,105.99

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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.