Home / 20,484.71-28,269.43-11,532.54

Finding the Fourth Proportional to 20,484.71, 28,269.43 and 11,532.54

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Solution

The fourth proportional to 20,484.71, 28,269.43 and 11,532.54 is: 15,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.71 : 28,269.43 = 11,532.54 : x
  2. Step 2: Convert to fraction form
    20,484.71/28,269.43 = 11,532.54/x
  3. Step 3: Cross multiply
    20,484.71x = 28,269.43 × 11,532.54
  4. Step 4: Simplify right side
    20,484.71x = 326,018,235.78
  5. Step 5: Solve for x
    x = 326,018,235.78/20,484.71
  6. Step 6: Final answer
    x = 15,915.20

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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.