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Finding the Fourth Proportional to 15,361.94, 21,200.54 and 8,648.12

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Solution

The fourth proportional to 15,361.94, 21,200.54 and 8,648.12 is: 11,935.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.94 : 21,200.54 = 8,648.12 : x
  2. Step 2: Convert to fraction form
    15,361.94/21,200.54 = 8,648.12/x
  3. Step 3: Cross multiply
    15,361.94x = 21,200.54 × 8,648.12
  4. Step 4: Simplify right side
    15,361.94x = 183,344,664.74
  5. Step 5: Solve for x
    x = 183,344,664.74/15,361.94
  6. Step 6: Final answer
    x = 11,935.00

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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.