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Finding the Fourth Proportional to 18,153.72, 25,037.10 and 15,327.63

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Solution

The fourth proportional to 18,153.72, 25,037.10 and 15,327.63 is: 21,139.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.72 : 25,037.10 = 15,327.63 : x
  2. Step 2: Convert to fraction form
    18,153.72/25,037.10 = 15,327.63/x
  3. Step 3: Cross multiply
    18,153.72x = 25,037.10 × 15,327.63
  4. Step 4: Simplify right side
    18,153.72x = 383,759,405.07
  5. Step 5: Solve for x
    x = 383,759,405.07/18,153.72
  6. Step 6: Final answer
    x = 21,139.44

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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.