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Finding the Fourth Proportional to 33,005.80, 49,515.90 and 10,815.40

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Solution

The fourth proportional to 33,005.80, 49,515.90 and 10,815.40 is: 16,225.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,005.80 : 49,515.90 = 10,815.40 : x
  2. Step 2: Convert to fraction form
    33,005.80/49,515.90 = 10,815.40/x
  3. Step 3: Cross multiply
    33,005.80x = 49,515.90 × 10,815.40
  4. Step 4: Simplify right side
    33,005.80x = 535,534,264.86
  5. Step 5: Solve for x
    x = 535,534,264.86/33,005.80
  6. Step 6: Final answer
    x = 16,225.46

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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.