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Finding the Fourth Proportional to 15,518, 21,414.56 and 8,444.32

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Solution

The fourth proportional to 15,518, 21,414.56 and 8,444.32 is: 11,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518 : 21,414.56 = 8,444.32 : x
  2. Step 2: Convert to fraction form
    15,518/21,414.56 = 8,444.32/x
  3. Step 3: Cross multiply
    15,518x = 21,414.56 × 8,444.32
  4. Step 4: Simplify right side
    15,518x = 180,831,397.30
  5. Step 5: Solve for x
    x = 180,831,397.30/15,518
  6. Step 6: Final answer
    x = 11,653.01

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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.