Home / 20,106.36-27,756.30-13,403.16

Finding the Fourth Proportional to 20,106.36, 27,756.30 and 13,403.16

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Solution

The fourth proportional to 20,106.36, 27,756.30 and 13,403.16 is: 18,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.36 : 27,756.30 = 13,403.16 : x
  2. Step 2: Convert to fraction form
    20,106.36/27,756.30 = 13,403.16/x
  3. Step 3: Cross multiply
    20,106.36x = 27,756.30 × 13,403.16
  4. Step 4: Simplify right side
    20,106.36x = 372,022,129.91
  5. Step 5: Solve for x
    x = 372,022,129.91/20,106.36
  6. Step 6: Final answer
    x = 18,502.71

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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.