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Finding the Fourth Proportional to 15,696.59, 21,666.99 and 10,393.12

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Solution

The fourth proportional to 15,696.59, 21,666.99 and 10,393.12 is: 14,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.59 : 21,666.99 = 10,393.12 : x
  2. Step 2: Convert to fraction form
    15,696.59/21,666.99 = 10,393.12/x
  3. Step 3: Cross multiply
    15,696.59x = 21,666.99 × 10,393.12
  4. Step 4: Simplify right side
    15,696.59x = 225,187,544.54
  5. Step 5: Solve for x
    x = 225,187,544.54/15,696.59
  6. Step 6: Final answer
    x = 14,346.27

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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.