Home / 20,291.56-30,447.40-13,703.28

Finding the Fourth Proportional to 20,291.56, 30,447.40 and 13,703.28

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Solution

The fourth proportional to 20,291.56, 30,447.40 and 13,703.28 is: 20,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.56 : 30,447.40 = 13,703.28 : x
  2. Step 2: Convert to fraction form
    20,291.56/30,447.40 = 13,703.28/x
  3. Step 3: Cross multiply
    20,291.56x = 30,447.40 × 13,703.28
  4. Step 4: Simplify right side
    20,291.56x = 417,229,247.47
  5. Step 5: Solve for x
    x = 417,229,247.47/20,291.56
  6. Step 6: Final answer
    x = 20,561.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.