Home / 13,705.20-20,582.10-10,011.60

Finding the Fourth Proportional to 13,705.20, 20,582.10 and 10,011.60

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Solution

The fourth proportional to 13,705.20, 20,582.10 and 10,011.60 is: 15,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.20 : 20,582.10 = 10,011.60 : x
  2. Step 2: Convert to fraction form
    13,705.20/20,582.10 = 10,011.60/x
  3. Step 3: Cross multiply
    13,705.20x = 20,582.10 × 10,011.60
  4. Step 4: Simplify right side
    13,705.20x = 206,059,752.36
  5. Step 5: Solve for x
    x = 206,059,752.36/13,705.20
  6. Step 6: Final answer
    x = 15,035.15

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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.