Home / 20,999.72-31,490.17-6,203.45

Finding the Fourth Proportional to 20,999.72, 31,490.17 and 6,203.45

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Solution

The fourth proportional to 20,999.72, 31,490.17 and 6,203.45 is: 9,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.72 : 31,490.17 = 6,203.45 : x
  2. Step 2: Convert to fraction form
    20,999.72/31,490.17 = 6,203.45/x
  3. Step 3: Cross multiply
    20,999.72x = 31,490.17 × 6,203.45
  4. Step 4: Simplify right side
    20,999.72x = 195,347,758.30
  5. Step 5: Solve for x
    x = 195,347,758.30/20,999.72
  6. Step 6: Final answer
    x = 9,302.40

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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.