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Finding the Fourth Proportional to 18,747.02, 25,875.24 and 12,374.78

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Solution

The fourth proportional to 18,747.02, 25,875.24 and 12,374.78 is: 17,080.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.02 : 25,875.24 = 12,374.78 : x
  2. Step 2: Convert to fraction form
    18,747.02/25,875.24 = 12,374.78/x
  3. Step 3: Cross multiply
    18,747.02x = 25,875.24 × 12,374.78
  4. Step 4: Simplify right side
    18,747.02x = 320,200,402.45
  5. Step 5: Solve for x
    x = 320,200,402.45/18,747.02
  6. Step 6: Final answer
    x = 17,080.07

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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.