Home / 13,540.86-20,206.71-12,301.56

Finding the Fourth Proportional to 13,540.86, 20,206.71 and 12,301.56

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Solution

The fourth proportional to 13,540.86, 20,206.71 and 12,301.56 is: 18,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.86 : 20,206.71 = 12,301.56 : x
  2. Step 2: Convert to fraction form
    13,540.86/20,206.71 = 12,301.56/x
  3. Step 3: Cross multiply
    13,540.86x = 20,206.71 × 12,301.56
  4. Step 4: Simplify right side
    13,540.86x = 248,574,055.47
  5. Step 5: Solve for x
    x = 248,574,055.47/13,540.86
  6. Step 6: Final answer
    x = 18,357.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.