Home / 20,926.56-31,376.08-11,920.98

Finding the Fourth Proportional to 20,926.56, 31,376.08 and 11,920.98

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Solution

The fourth proportional to 20,926.56, 31,376.08 and 11,920.98 is: 17,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.56 : 31,376.08 = 11,920.98 : x
  2. Step 2: Convert to fraction form
    20,926.56/31,376.08 = 11,920.98/x
  3. Step 3: Cross multiply
    20,926.56x = 31,376.08 × 11,920.98
  4. Step 4: Simplify right side
    20,926.56x = 374,033,622.16
  5. Step 5: Solve for x
    x = 374,033,622.16/20,926.56
  6. Step 6: Final answer
    x = 17,873.63

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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.