Home / 15,911.19-21,958.07-10,885.95

Finding the Fourth Proportional to 15,911.19, 21,958.07 and 10,885.95

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Solution

The fourth proportional to 15,911.19, 21,958.07 and 10,885.95 is: 15,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.19 : 21,958.07 = 10,885.95 : x
  2. Step 2: Convert to fraction form
    15,911.19/21,958.07 = 10,885.95/x
  3. Step 3: Cross multiply
    15,911.19x = 21,958.07 × 10,885.95
  4. Step 4: Simplify right side
    15,911.19x = 239,034,397.69
  5. Step 5: Solve for x
    x = 239,034,397.69/15,911.19
  6. Step 6: Final answer
    x = 15,023.04

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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.