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Finding the Fourth Proportional to 15,444.66, 21,313.74 and 8,371.10

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Solution

The fourth proportional to 15,444.66, 21,313.74 and 8,371.10 is: 11,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.66 : 21,313.74 = 8,371.10 : x
  2. Step 2: Convert to fraction form
    15,444.66/21,313.74 = 8,371.10/x
  3. Step 3: Cross multiply
    15,444.66x = 21,313.74 × 8,371.10
  4. Step 4: Simplify right side
    15,444.66x = 178,419,342.35
  5. Step 5: Solve for x
    x = 178,419,342.35/15,444.66
  6. Step 6: Final answer
    x = 11,552.17

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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.