Home / 15,911.22-21,967.34-10,255.71

Finding the Fourth Proportional to 15,911.22, 21,967.34 and 10,255.71

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Solution

The fourth proportional to 15,911.22, 21,967.34 and 10,255.71 is: 14,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.22 : 21,967.34 = 10,255.71 : x
  2. Step 2: Convert to fraction form
    15,911.22/21,967.34 = 10,255.71/x
  3. Step 3: Cross multiply
    15,911.22x = 21,967.34 × 10,255.71
  4. Step 4: Simplify right side
    15,911.22x = 225,290,668.51
  5. Step 5: Solve for x
    x = 225,290,668.51/15,911.22
  6. Step 6: Final answer
    x = 14,159.23

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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.