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Finding the Fourth Proportional to 18,807.32, 25,954 and 10,423.80

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Solution

The fourth proportional to 18,807.32, 25,954 and 10,423.80 is: 14,384.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.32 : 25,954 = 10,423.80 : x
  2. Step 2: Convert to fraction form
    18,807.32/25,954 = 10,423.80/x
  3. Step 3: Cross multiply
    18,807.32x = 25,954 × 10,423.80
  4. Step 4: Simplify right side
    18,807.32x = 270,539,305.20
  5. Step 5: Solve for x
    x = 270,539,305.20/18,807.32
  6. Step 6: Final answer
    x = 14,384.79

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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.