Home / 20,915.25-28,863.05-11,484.42

Finding the Fourth Proportional to 20,915.25, 28,863.05 and 11,484.42

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Solution

The fourth proportional to 20,915.25, 28,863.05 and 11,484.42 is: 15,848.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.25 : 28,863.05 = 11,484.42 : x
  2. Step 2: Convert to fraction form
    20,915.25/28,863.05 = 11,484.42/x
  3. Step 3: Cross multiply
    20,915.25x = 28,863.05 × 11,484.42
  4. Step 4: Simplify right side
    20,915.25x = 331,475,331.26
  5. Step 5: Solve for x
    x = 331,475,331.26/20,915.25
  6. Step 6: Final answer
    x = 15,848.50

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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.