Home / 20,736.12-31,086.20-9,637.10

Finding the Fourth Proportional to 20,736.12, 31,086.20 and 9,637.10

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Solution

The fourth proportional to 20,736.12, 31,086.20 and 9,637.10 is: 14,447.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.12 : 31,086.20 = 9,637.10 : x
  2. Step 2: Convert to fraction form
    20,736.12/31,086.20 = 9,637.10/x
  3. Step 3: Cross multiply
    20,736.12x = 31,086.20 × 9,637.10
  4. Step 4: Simplify right side
    20,736.12x = 299,580,818.02
  5. Step 5: Solve for x
    x = 299,580,818.02/20,736.12
  6. Step 6: Final answer
    x = 14,447.29

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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.