Home / 15,359.40-21,196.67-8,647.34

Finding the Fourth Proportional to 15,359.40, 21,196.67 and 8,647.34

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Solution

The fourth proportional to 15,359.40, 21,196.67 and 8,647.34 is: 11,933.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.40 : 21,196.67 = 8,647.34 : x
  2. Step 2: Convert to fraction form
    15,359.40/21,196.67 = 8,647.34/x
  3. Step 3: Cross multiply
    15,359.40x = 21,196.67 × 8,647.34
  4. Step 4: Simplify right side
    15,359.40x = 183,294,663.14
  5. Step 5: Solve for x
    x = 183,294,663.14/15,359.40
  6. Step 6: Final answer
    x = 11,933.71

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Similar ratio
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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.