Home / 15,359.27-21,196.40-8,644.86

Finding the Fourth Proportional to 15,359.27, 21,196.40 and 8,644.86

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Solution

The fourth proportional to 15,359.27, 21,196.40 and 8,644.86 is: 11,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.27 : 21,196.40 = 8,644.86 : x
  2. Step 2: Convert to fraction form
    15,359.27/21,196.40 = 8,644.86/x
  3. Step 3: Cross multiply
    15,359.27x = 21,196.40 × 8,644.86
  4. Step 4: Simplify right side
    15,359.27x = 183,239,867.28
  5. Step 5: Solve for x
    x = 183,239,867.28/15,359.27
  6. Step 6: Final answer
    x = 11,930.25

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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.