Home / 15,869.52-21,869.73-11,621.88

Finding the Fourth Proportional to 15,869.52, 21,869.73 and 11,621.88

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Solution

The fourth proportional to 15,869.52, 21,869.73 and 11,621.88 is: 16,016.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.52 : 21,869.73 = 11,621.88 : x
  2. Step 2: Convert to fraction form
    15,869.52/21,869.73 = 11,621.88/x
  3. Step 3: Cross multiply
    15,869.52x = 21,869.73 × 11,621.88
  4. Step 4: Simplify right side
    15,869.52x = 254,167,377.69
  5. Step 5: Solve for x
    x = 254,167,377.69/15,869.52
  6. Step 6: Final answer
    x = 16,016.07

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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.