Home / 18,670.33-25,729.61-13,355.92

Finding the Fourth Proportional to 18,670.33, 25,729.61 and 13,355.92

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Solution

The fourth proportional to 18,670.33, 25,729.61 and 13,355.92 is: 18,405.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.33 : 25,729.61 = 13,355.92 : x
  2. Step 2: Convert to fraction form
    18,670.33/25,729.61 = 13,355.92/x
  3. Step 3: Cross multiply
    18,670.33x = 25,729.61 × 13,355.92
  4. Step 4: Simplify right side
    18,670.33x = 343,642,417.36
  5. Step 5: Solve for x
    x = 343,642,417.36/18,670.33
  6. Step 6: Final answer
    x = 18,405.81

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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.