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Finding the Fourth Proportional to 15,569.10, 21,486 and 8,495.88

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Solution

The fourth proportional to 15,569.10, 21,486 and 8,495.88 is: 11,724.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.10 : 21,486 = 8,495.88 : x
  2. Step 2: Convert to fraction form
    15,569.10/21,486 = 8,495.88/x
  3. Step 3: Cross multiply
    15,569.10x = 21,486 × 8,495.88
  4. Step 4: Simplify right side
    15,569.10x = 182,542,477.68
  5. Step 5: Solve for x
    x = 182,542,477.68/15,569.10
  6. Step 6: Final answer
    x = 11,724.66

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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.