Home / 18,955.48-28,439.61-11,927.20

Finding the Fourth Proportional to 18,955.48, 28,439.61 and 11,927.20

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Solution

The fourth proportional to 18,955.48, 28,439.61 and 11,927.20 is: 17,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.48 : 28,439.61 = 11,927.20 : x
  2. Step 2: Convert to fraction form
    18,955.48/28,439.61 = 11,927.20/x
  3. Step 3: Cross multiply
    18,955.48x = 28,439.61 × 11,927.20
  4. Step 4: Simplify right side
    18,955.48x = 339,204,916.39
  5. Step 5: Solve for x
    x = 339,204,916.39/18,955.48
  6. Step 6: Final answer
    x = 17,894.82

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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.