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Finding the Fourth Proportional to 15,361.92, 21,199.24 and 8,737.92

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Solution

The fourth proportional to 15,361.92, 21,199.24 and 8,737.92 is: 12,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.92 : 21,199.24 = 8,737.92 : x
  2. Step 2: Convert to fraction form
    15,361.92/21,199.24 = 8,737.92/x
  3. Step 3: Cross multiply
    15,361.92x = 21,199.24 × 8,737.92
  4. Step 4: Simplify right side
    15,361.92x = 185,237,263.18
  5. Step 5: Solve for x
    x = 185,237,263.18/15,361.92
  6. Step 6: Final answer
    x = 12,058.21

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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.