Home / 15,235.70-21,025.73-8,521.19

Finding the Fourth Proportional to 15,235.70, 21,025.73 and 8,521.19

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Solution

The fourth proportional to 15,235.70, 21,025.73 and 8,521.19 is: 11,759.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.70 : 21,025.73 = 8,521.19 : x
  2. Step 2: Convert to fraction form
    15,235.70/21,025.73 = 8,521.19/x
  3. Step 3: Cross multiply
    15,235.70x = 21,025.73 × 8,521.19
  4. Step 4: Simplify right side
    15,235.70x = 179,164,092.48
  5. Step 5: Solve for x
    x = 179,164,092.48/15,235.70
  6. Step 6: Final answer
    x = 11,759.49

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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.