Home / 20,462.15-28,228.23-13,291.58

Finding the Fourth Proportional to 20,462.15, 28,228.23 and 13,291.58

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Solution

The fourth proportional to 20,462.15, 28,228.23 and 13,291.58 is: 18,336.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.15 : 28,228.23 = 13,291.58 : x
  2. Step 2: Convert to fraction form
    20,462.15/28,228.23 = 13,291.58/x
  3. Step 3: Cross multiply
    20,462.15x = 28,228.23 × 13,291.58
  4. Step 4: Simplify right side
    20,462.15x = 375,197,777.30
  5. Step 5: Solve for x
    x = 375,197,777.30/20,462.15
  6. Step 6: Final answer
    x = 18,336.19

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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.