Home / 20,827.85-31,202.54-10,285.53

Finding the Fourth Proportional to 20,827.85, 31,202.54 and 10,285.53

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Solution

The fourth proportional to 20,827.85, 31,202.54 and 10,285.53 is: 15,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.85 : 31,202.54 = 10,285.53 : x
  2. Step 2: Convert to fraction form
    20,827.85/31,202.54 = 10,285.53/x
  3. Step 3: Cross multiply
    20,827.85x = 31,202.54 × 10,285.53
  4. Step 4: Simplify right side
    20,827.85x = 320,934,609.82
  5. Step 5: Solve for x
    x = 320,934,609.82/20,827.85
  6. Step 6: Final answer
    x = 15,408.92

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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.