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Finding the Fourth Proportional to 18,374.60, 25,368.84 and 11,578.43

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Solution

The fourth proportional to 18,374.60, 25,368.84 and 11,578.43 is: 15,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.60 : 25,368.84 = 11,578.43 : x
  2. Step 2: Convert to fraction form
    18,374.60/25,368.84 = 11,578.43/x
  3. Step 3: Cross multiply
    18,374.60x = 25,368.84 × 11,578.43
  4. Step 4: Simplify right side
    18,374.60x = 293,731,211.28
  5. Step 5: Solve for x
    x = 293,731,211.28/18,374.60
  6. Step 6: Final answer
    x = 15,985.72

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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.