Home / 20,895.34-28,827.36-13,340.20

Finding the Fourth Proportional to 20,895.34, 28,827.36 and 13,340.20

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Solution

The fourth proportional to 20,895.34, 28,827.36 and 13,340.20 is: 18,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.34 : 28,827.36 = 13,340.20 : x
  2. Step 2: Convert to fraction form
    20,895.34/28,827.36 = 13,340.20/x
  3. Step 3: Cross multiply
    20,895.34x = 28,827.36 × 13,340.20
  4. Step 4: Simplify right side
    20,895.34x = 384,562,747.87
  5. Step 5: Solve for x
    x = 384,562,747.87/20,895.34
  6. Step 6: Final answer
    x = 18,404.24

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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.