Home / 15,486.37-21,371.17-8,412.74

Finding the Fourth Proportional to 15,486.37, 21,371.17 and 8,412.74

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Solution

The fourth proportional to 15,486.37, 21,371.17 and 8,412.74 is: 11,609.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.37 : 21,371.17 = 8,412.74 : x
  2. Step 2: Convert to fraction form
    15,486.37/21,371.17 = 8,412.74/x
  3. Step 3: Cross multiply
    15,486.37x = 21,371.17 × 8,412.74
  4. Step 4: Simplify right side
    15,486.37x = 179,790,096.71
  5. Step 5: Solve for x
    x = 179,790,096.71/15,486.37
  6. Step 6: Final answer
    x = 11,609.57

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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.