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Finding the Fourth Proportional to 28,951.50, 39,955.50 and 18,337.26

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Solution

The fourth proportional to 28,951.50, 39,955.50 and 18,337.26 is: 25,306.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.50 : 39,955.50 = 18,337.26 : x
  2. Step 2: Convert to fraction form
    28,951.50/39,955.50 = 18,337.26/x
  3. Step 3: Cross multiply
    28,951.50x = 39,955.50 × 18,337.26
  4. Step 4: Simplify right side
    28,951.50x = 732,674,391.93
  5. Step 5: Solve for x
    x = 732,674,391.93/28,951.50
  6. Step 6: Final answer
    x = 25,306.96

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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.