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Finding the Fourth Proportional to 18,740, 25,861.56 and 10,356.32

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Solution

The fourth proportional to 18,740, 25,861.56 and 10,356.32 is: 14,291.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740 : 25,861.56 = 10,356.32 : x
  2. Step 2: Convert to fraction form
    18,740/25,861.56 = 10,356.32/x
  3. Step 3: Cross multiply
    18,740x = 25,861.56 × 10,356.32
  4. Step 4: Simplify right side
    18,740x = 267,830,591.06
  5. Step 5: Solve for x
    x = 267,830,591.06/18,740
  6. Step 6: Final answer
    x = 14,291.92

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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.