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Finding the Fourth Proportional to 14,287.49, 19,719.14 and 8,322.69

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Solution

The fourth proportional to 14,287.49, 19,719.14 and 8,322.69 is: 11,486.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.49 : 19,719.14 = 8,322.69 : x
  2. Step 2: Convert to fraction form
    14,287.49/19,719.14 = 8,322.69/x
  3. Step 3: Cross multiply
    14,287.49x = 19,719.14 × 8,322.69
  4. Step 4: Simplify right side
    14,287.49x = 164,116,289.29
  5. Step 5: Solve for x
    x = 164,116,289.29/14,287.49
  6. Step 6: Final answer
    x = 11,486.71

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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.