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Finding the Fourth Proportional to 18,422.58, 25,423.20 and 10,039.08

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Solution

The fourth proportional to 18,422.58, 25,423.20 and 10,039.08 is: 13,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.58 : 25,423.20 = 10,039.08 : x
  2. Step 2: Convert to fraction form
    18,422.58/25,423.20 = 10,039.08/x
  3. Step 3: Cross multiply
    18,422.58x = 25,423.20 × 10,039.08
  4. Step 4: Simplify right side
    18,422.58x = 255,225,538.66
  5. Step 5: Solve for x
    x = 255,225,538.66/18,422.58
  6. Step 6: Final answer
    x = 13,853.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.