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Finding the Fourth Proportional to 15,663.66, 21,619.62 and 10,636.26

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Solution

The fourth proportional to 15,663.66, 21,619.62 and 10,636.26 is: 14,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.66 : 21,619.62 = 10,636.26 : x
  2. Step 2: Convert to fraction form
    15,663.66/21,619.62 = 10,636.26/x
  3. Step 3: Cross multiply
    15,663.66x = 21,619.62 × 10,636.26
  4. Step 4: Simplify right side
    15,663.66x = 229,951,899.42
  5. Step 5: Solve for x
    x = 229,951,899.42/15,663.66
  6. Step 6: Final answer
    x = 14,680.60

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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.