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Finding the Fourth Proportional to 30,873.84, 42,605.62 and 16,726.65

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Solution

The fourth proportional to 30,873.84, 42,605.62 and 16,726.65 is: 23,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,873.84 : 42,605.62 = 16,726.65 : x
  2. Step 2: Convert to fraction form
    30,873.84/42,605.62 = 16,726.65/x
  3. Step 3: Cross multiply
    30,873.84x = 42,605.62 × 16,726.65
  4. Step 4: Simplify right side
    30,873.84x = 712,649,293.77
  5. Step 5: Solve for x
    x = 712,649,293.77/30,873.84
  6. Step 6: Final answer
    x = 23,082.63

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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.