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Finding the Fourth Proportional to 15,451.84, 21,322.24 and 8,737.12

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Solution

The fourth proportional to 15,451.84, 21,322.24 and 8,737.12 is: 12,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.84 : 21,322.24 = 8,737.12 : x
  2. Step 2: Convert to fraction form
    15,451.84/21,322.24 = 8,737.12/x
  3. Step 3: Cross multiply
    15,451.84x = 21,322.24 × 8,737.12
  4. Step 4: Simplify right side
    15,451.84x = 186,294,969.55
  5. Step 5: Solve for x
    x = 186,294,969.55/15,451.84
  6. Step 6: Final answer
    x = 12,056.49

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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.