Home / 18,661.72-25,727.40-13,347.28

Finding the Fourth Proportional to 18,661.72, 25,727.40 and 13,347.28

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Solution

The fourth proportional to 18,661.72, 25,727.40 and 13,347.28 is: 18,400.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.72 : 25,727.40 = 13,347.28 : x
  2. Step 2: Convert to fraction form
    18,661.72/25,727.40 = 13,347.28/x
  3. Step 3: Cross multiply
    18,661.72x = 25,727.40 × 13,347.28
  4. Step 4: Simplify right side
    18,661.72x = 343,390,811.47
  5. Step 5: Solve for x
    x = 343,390,811.47/18,661.72
  6. Step 6: Final answer
    x = 18,400.81

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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.