Home / 15,395.32-21,245.49-8,321.74

Finding the Fourth Proportional to 15,395.32, 21,245.49 and 8,321.74

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Solution

The fourth proportional to 15,395.32, 21,245.49 and 8,321.74 is: 11,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.32 : 21,245.49 = 8,321.74 : x
  2. Step 2: Convert to fraction form
    15,395.32/21,245.49 = 8,321.74/x
  3. Step 3: Cross multiply
    15,395.32x = 21,245.49 × 8,321.74
  4. Step 4: Simplify right side
    15,395.32x = 176,799,390.84
  5. Step 5: Solve for x
    x = 176,799,390.84/15,395.32
  6. Step 6: Final answer
    x = 11,483.97

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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.