Home / 20,670.10-31,005.15-6,630.10

Finding the Fourth Proportional to 20,670.10, 31,005.15 and 6,630.10

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Solution

The fourth proportional to 20,670.10, 31,005.15 and 6,630.10 is: 9,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.10 : 31,005.15 = 6,630.10 : x
  2. Step 2: Convert to fraction form
    20,670.10/31,005.15 = 6,630.10/x
  3. Step 3: Cross multiply
    20,670.10x = 31,005.15 × 6,630.10
  4. Step 4: Simplify right side
    20,670.10x = 205,567,245.02
  5. Step 5: Solve for x
    x = 205,567,245.02/20,670.10
  6. Step 6: Final answer
    x = 9,945.15

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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.