Home / 30,677.19-45,982.90-15,871.20

Finding the Fourth Proportional to 30,677.19, 45,982.90 and 15,871.20

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Solution

The fourth proportional to 30,677.19, 45,982.90 and 15,871.20 is: 23,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,677.19 : 45,982.90 = 15,871.20 : x
  2. Step 2: Convert to fraction form
    30,677.19/45,982.90 = 15,871.20/x
  3. Step 3: Cross multiply
    30,677.19x = 45,982.90 × 15,871.20
  4. Step 4: Simplify right side
    30,677.19x = 729,803,802.48
  5. Step 5: Solve for x
    x = 729,803,802.48/30,677.19
  6. Step 6: Final answer
    x = 23,789.79

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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.