Home / 20,484.75-28,269.50-11,532.59

Finding the Fourth Proportional to 20,484.75, 28,269.50 and 11,532.59

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Solution

The fourth proportional to 20,484.75, 28,269.50 and 11,532.59 is: 15,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.75 : 28,269.50 = 11,532.59 : x
  2. Step 2: Convert to fraction form
    20,484.75/28,269.50 = 11,532.59/x
  3. Step 3: Cross multiply
    20,484.75x = 28,269.50 × 11,532.59
  4. Step 4: Simplify right side
    20,484.75x = 326,020,353.99
  5. Step 5: Solve for x
    x = 326,020,353.99/20,484.75
  6. Step 6: Final answer
    x = 15,915.27

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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.