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Finding the Fourth Proportional to 25,318, 34,910.40 and 16,353.68

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Solution

The fourth proportional to 25,318, 34,910.40 and 16,353.68 is: 22,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,318 : 34,910.40 = 16,353.68 : x
  2. Step 2: Convert to fraction form
    25,318/34,910.40 = 16,353.68/x
  3. Step 3: Cross multiply
    25,318x = 34,910.40 × 16,353.68
  4. Step 4: Simplify right side
    25,318x = 570,913,510.27
  5. Step 5: Solve for x
    x = 570,913,510.27/25,318
  6. Step 6: Final answer
    x = 22,549.71

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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.