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Finding the Fourth Proportional to 30,687.77, 45,932.65 and 15,876.29

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Solution

The fourth proportional to 30,687.77, 45,932.65 and 15,876.29 is: 23,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.77 : 45,932.65 = 15,876.29 : x
  2. Step 2: Convert to fraction form
    30,687.77/45,932.65 = 15,876.29/x
  3. Step 3: Cross multiply
    30,687.77x = 45,932.65 × 15,876.29
  4. Step 4: Simplify right side
    30,687.77x = 729,239,802.51
  5. Step 5: Solve for x
    x = 729,239,802.51/30,687.77
  6. Step 6: Final answer
    x = 23,763.21

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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.