Home / 15,919.28-21,943.33-12,556.62

Finding the Fourth Proportional to 15,919.28, 21,943.33 and 12,556.62

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Solution

The fourth proportional to 15,919.28, 21,943.33 and 12,556.62 is: 17,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.28 : 21,943.33 = 12,556.62 : x
  2. Step 2: Convert to fraction form
    15,919.28/21,943.33 = 12,556.62/x
  3. Step 3: Cross multiply
    15,919.28x = 21,943.33 × 12,556.62
  4. Step 4: Simplify right side
    15,919.28x = 275,534,056.34
  5. Step 5: Solve for x
    x = 275,534,056.34/15,919.28
  6. Step 6: Final answer
    x = 17,308.20

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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.