Home / 15,396.98-21,247.81-8,323.38

Finding the Fourth Proportional to 15,396.98, 21,247.81 and 8,323.38

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Solution

The fourth proportional to 15,396.98, 21,247.81 and 8,323.38 is: 11,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.98 : 21,247.81 = 8,323.38 : x
  2. Step 2: Convert to fraction form
    15,396.98/21,247.81 = 8,323.38/x
  3. Step 3: Cross multiply
    15,396.98x = 21,247.81 × 8,323.38
  4. Step 4: Simplify right side
    15,396.98x = 176,853,575.99
  5. Step 5: Solve for x
    x = 176,853,575.99/15,396.98
  6. Step 6: Final answer
    x = 11,486.25

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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.