Home / 15,223.92-21,010.59-8,511.90

Finding the Fourth Proportional to 15,223.92, 21,010.59 and 8,511.90

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Solution

The fourth proportional to 15,223.92, 21,010.59 and 8,511.90 is: 11,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.92 : 21,010.59 = 8,511.90 : x
  2. Step 2: Convert to fraction form
    15,223.92/21,010.59 = 8,511.90/x
  3. Step 3: Cross multiply
    15,223.92x = 21,010.59 × 8,511.90
  4. Step 4: Simplify right side
    15,223.92x = 178,840,041.02
  5. Step 5: Solve for x
    x = 178,840,041.02/15,223.92
  6. Step 6: Final answer
    x = 11,747.31

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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.