Home / 15,644.14-21,572.25-12,790.18

Finding the Fourth Proportional to 15,644.14, 21,572.25 and 12,790.18

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Solution

The fourth proportional to 15,644.14, 21,572.25 and 12,790.18 is: 17,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.14 : 21,572.25 = 12,790.18 : x
  2. Step 2: Convert to fraction form
    15,644.14/21,572.25 = 12,790.18/x
  3. Step 3: Cross multiply
    15,644.14x = 21,572.25 × 12,790.18
  4. Step 4: Simplify right side
    15,644.14x = 275,912,960.51
  5. Step 5: Solve for x
    x = 275,912,960.51/15,644.14
  6. Step 6: Final answer
    x = 17,636.83

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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.