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Finding the Fourth Proportional to 28,521.94, 42,780.48 and 8,800.66

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Solution

The fourth proportional to 28,521.94, 42,780.48 and 8,800.66 is: 13,200.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.94 : 42,780.48 = 8,800.66 : x
  2. Step 2: Convert to fraction form
    28,521.94/42,780.48 = 8,800.66/x
  3. Step 3: Cross multiply
    28,521.94x = 42,780.48 × 8,800.66
  4. Step 4: Simplify right side
    28,521.94x = 376,496,459.12
  5. Step 5: Solve for x
    x = 376,496,459.12/28,521.94
  6. Step 6: Final answer
    x = 13,200.24

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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.