Home / 20,736.18-31,115.26-9,637.20

Finding the Fourth Proportional to 20,736.18, 31,115.26 and 9,637.20

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Solution

The fourth proportional to 20,736.18, 31,115.26 and 9,637.20 is: 14,460.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.18 : 31,115.26 = 9,637.20 : x
  2. Step 2: Convert to fraction form
    20,736.18/31,115.26 = 9,637.20/x
  3. Step 3: Cross multiply
    20,736.18x = 31,115.26 × 9,637.20
  4. Step 4: Simplify right side
    20,736.18x = 299,863,983.67
  5. Step 5: Solve for x
    x = 299,863,983.67/20,736.18
  6. Step 6: Final answer
    x = 14,460.91

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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.