Home / 19,121.57-28,689.71-9,260.09

Finding the Fourth Proportional to 19,121.57, 28,689.71 and 9,260.09

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Solution

The fourth proportional to 19,121.57, 28,689.71 and 9,260.09 is: 13,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.57 : 28,689.71 = 9,260.09 : x
  2. Step 2: Convert to fraction form
    19,121.57/28,689.71 = 9,260.09/x
  3. Step 3: Cross multiply
    19,121.57x = 28,689.71 × 9,260.09
  4. Step 4: Simplify right side
    19,121.57x = 265,669,296.67
  5. Step 5: Solve for x
    x = 265,669,296.67/19,121.57
  6. Step 6: Final answer
    x = 13,893.70

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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.