Home / 15,918.14-21,976.98-10,255.70

Finding the Fourth Proportional to 15,918.14, 21,976.98 and 10,255.70

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Solution

The fourth proportional to 15,918.14, 21,976.98 and 10,255.70 is: 14,159.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.14 : 21,976.98 = 10,255.70 : x
  2. Step 2: Convert to fraction form
    15,918.14/21,976.98 = 10,255.70/x
  3. Step 3: Cross multiply
    15,918.14x = 21,976.98 × 10,255.70
  4. Step 4: Simplify right side
    15,918.14x = 225,389,313.79
  5. Step 5: Solve for x
    x = 225,389,313.79/15,918.14
  6. Step 6: Final answer
    x = 14,159.27

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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.