Home / 28,347.50-39,124.95-18,770.49

Finding the Fourth Proportional to 28,347.50, 39,124.95 and 18,770.49

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Solution

The fourth proportional to 28,347.50, 39,124.95 and 18,770.49 is: 25,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.50 : 39,124.95 = 18,770.49 : x
  2. Step 2: Convert to fraction form
    28,347.50/39,124.95 = 18,770.49/x
  3. Step 3: Cross multiply
    28,347.50x = 39,124.95 × 18,770.49
  4. Step 4: Simplify right side
    28,347.50x = 734,394,482.73
  5. Step 5: Solve for x
    x = 734,394,482.73/28,347.50
  6. Step 6: Final answer
    x = 25,906.86

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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.