Home / 15,396.38-21,247.02-8,322.80

Finding the Fourth Proportional to 15,396.38, 21,247.02 and 8,322.80

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Solution

The fourth proportional to 15,396.38, 21,247.02 and 8,322.80 is: 11,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.38 : 21,247.02 = 8,322.80 : x
  2. Step 2: Convert to fraction form
    15,396.38/21,247.02 = 8,322.80/x
  3. Step 3: Cross multiply
    15,396.38x = 21,247.02 × 8,322.80
  4. Step 4: Simplify right side
    15,396.38x = 176,834,698.06
  5. Step 5: Solve for x
    x = 176,834,698.06/15,396.38
  6. Step 6: Final answer
    x = 11,485.47

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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.