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Finding the Fourth Proportional to 15,155.00, 20,913.90 and 8,441.91

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Solution

The fourth proportional to 15,155.00, 20,913.90 and 8,441.91 is: 11,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.00 : 20,913.90 = 8,441.91 : x
  2. Step 2: Convert to fraction form
    15,155.00/20,913.90 = 8,441.91/x
  3. Step 3: Cross multiply
    15,155.00x = 20,913.90 × 8,441.91
  4. Step 4: Simplify right side
    15,155.00x = 176,553,261.55
  5. Step 5: Solve for x
    x = 176,553,261.55/15,155.00
  6. Step 6: Final answer
    x = 11,649.84

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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.