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Finding the Fourth Proportional to 28,446.84, 42,669.99 and 9,726.66

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Solution

The fourth proportional to 28,446.84, 42,669.99 and 9,726.66 is: 14,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.84 : 42,669.99 = 9,726.66 : x
  2. Step 2: Convert to fraction form
    28,446.84/42,669.99 = 9,726.66/x
  3. Step 3: Cross multiply
    28,446.84x = 42,669.99 × 9,726.66
  4. Step 4: Simplify right side
    28,446.84x = 415,036,484.93
  5. Step 5: Solve for x
    x = 415,036,484.93/28,446.84
  6. Step 6: Final answer
    x = 14,589.90

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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.