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Finding the Fourth Proportional to 42,573.44, 63,863.94 and 12,994.40

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Solution

The fourth proportional to 42,573.44, 63,863.94 and 12,994.40 is: 19,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,573.44 : 63,863.94 = 12,994.40 : x
  2. Step 2: Convert to fraction form
    42,573.44/63,863.94 = 12,994.40/x
  3. Step 3: Cross multiply
    42,573.44x = 63,863.94 × 12,994.40
  4. Step 4: Simplify right side
    42,573.44x = 829,873,581.94
  5. Step 5: Solve for x
    x = 829,873,581.94/42,573.44
  6. Step 6: Final answer
    x = 19,492.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.