Home / 28,667.76-42,990.71-13,672.23

Finding the Fourth Proportional to 28,667.76, 42,990.71 and 13,672.23

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Solution

The fourth proportional to 28,667.76, 42,990.71 and 13,672.23 is: 20,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.76 : 42,990.71 = 13,672.23 : x
  2. Step 2: Convert to fraction form
    28,667.76/42,990.71 = 13,672.23/x
  3. Step 3: Cross multiply
    28,667.76x = 42,990.71 × 13,672.23
  4. Step 4: Simplify right side
    28,667.76x = 587,778,806.62
  5. Step 5: Solve for x
    x = 587,778,806.62/28,667.76
  6. Step 6: Final answer
    x = 20,503.13

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1.5x scale

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.