Home / 21,003.60-31,512.12-6,212.64

Finding the Fourth Proportional to 21,003.60, 31,512.12 and 6,212.64

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Solution

The fourth proportional to 21,003.60, 31,512.12 and 6,212.64 is: 9,320.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.60 : 31,512.12 = 6,212.64 : x
  2. Step 2: Convert to fraction form
    21,003.60/31,512.12 = 6,212.64/x
  3. Step 3: Cross multiply
    21,003.60x = 31,512.12 × 6,212.64
  4. Step 4: Simplify right side
    21,003.60x = 195,773,457.20
  5. Step 5: Solve for x
    x = 195,773,457.20/21,003.60
  6. Step 6: Final answer
    x = 9,320.95

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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.