Home / 15,227.38-21,012.93-8,421.01

Finding the Fourth Proportional to 15,227.38, 21,012.93 and 8,421.01

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Solution

The fourth proportional to 15,227.38, 21,012.93 and 8,421.01 is: 11,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.38 : 21,012.93 = 8,421.01 : x
  2. Step 2: Convert to fraction form
    15,227.38/21,012.93 = 8,421.01/x
  3. Step 3: Cross multiply
    15,227.38x = 21,012.93 × 8,421.01
  4. Step 4: Simplify right side
    15,227.38x = 176,950,093.66
  5. Step 5: Solve for x
    x = 176,950,093.66/15,227.38
  6. Step 6: Final answer
    x = 11,620.52

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Half scale
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Double scale
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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.