Home / 20,801.34-28,705.86-13,349.34

Finding the Fourth Proportional to 20,801.34, 28,705.86 and 13,349.34

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Solution

The fourth proportional to 20,801.34, 28,705.86 and 13,349.34 is: 18,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.34 : 28,705.86 = 13,349.34 : x
  2. Step 2: Convert to fraction form
    20,801.34/28,705.86 = 13,349.34/x
  3. Step 3: Cross multiply
    20,801.34x = 28,705.86 × 13,349.34
  4. Step 4: Simplify right side
    20,801.34x = 383,204,285.13
  5. Step 5: Solve for x
    x = 383,204,285.13/20,801.34
  6. Step 6: Final answer
    x = 18,422.10

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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.