Home / 15,921.75-21,975.26-10,899.85

Finding the Fourth Proportional to 15,921.75, 21,975.26 and 10,899.85

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Solution

The fourth proportional to 15,921.75, 21,975.26 and 10,899.85 is: 15,044.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.75 : 21,975.26 = 10,899.85 : x
  2. Step 2: Convert to fraction form
    15,921.75/21,975.26 = 10,899.85/x
  3. Step 3: Cross multiply
    15,921.75x = 21,975.26 × 10,899.85
  4. Step 4: Simplify right side
    15,921.75x = 239,527,037.71
  5. Step 5: Solve for x
    x = 239,527,037.71/15,921.75
  6. Step 6: Final answer
    x = 15,044.01

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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.