Home / 20,926.91-28,880.54-11,495.57

Finding the Fourth Proportional to 20,926.91, 28,880.54 and 11,495.57

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Solution

The fourth proportional to 20,926.91, 28,880.54 and 11,495.57 is: 15,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.91 : 28,880.54 = 11,495.57 : x
  2. Step 2: Convert to fraction form
    20,926.91/28,880.54 = 11,495.57/x
  3. Step 3: Cross multiply
    20,926.91x = 28,880.54 × 11,495.57
  4. Step 4: Simplify right side
    20,926.91x = 331,998,153.54
  5. Step 5: Solve for x
    x = 331,998,153.54/20,926.91
  6. Step 6: Final answer
    x = 15,864.66

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1.5x scale

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.