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Finding the Fourth Proportional to 18,312.58, 25,270.60 and 10,354.94

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Solution

The fourth proportional to 18,312.58, 25,270.60 and 10,354.94 is: 14,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.58 : 25,270.60 = 10,354.94 : x
  2. Step 2: Convert to fraction form
    18,312.58/25,270.60 = 10,354.94/x
  3. Step 3: Cross multiply
    18,312.58x = 25,270.60 × 10,354.94
  4. Step 4: Simplify right side
    18,312.58x = 261,675,508.70
  5. Step 5: Solve for x
    x = 261,675,508.70/18,312.58
  6. Step 6: Final answer
    x = 14,289.38

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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.