Home / 20,972.25-28,941.91-11,541.02

Finding the Fourth Proportional to 20,972.25, 28,941.91 and 11,541.02

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Solution

The fourth proportional to 20,972.25, 28,941.91 and 11,541.02 is: 15,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.25 : 28,941.91 = 11,541.02 : x
  2. Step 2: Convert to fraction form
    20,972.25/28,941.91 = 11,541.02/x
  3. Step 3: Cross multiply
    20,972.25x = 28,941.91 × 11,541.02
  4. Step 4: Simplify right side
    20,972.25x = 334,019,162.15
  5. Step 5: Solve for x
    x = 334,019,162.15/20,972.25
  6. Step 6: Final answer
    x = 15,926.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.