Home / 13,582.40-20,357.40-7,005.20

Finding the Fourth Proportional to 13,582.40, 20,357.40 and 7,005.20

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Solution

The fourth proportional to 13,582.40, 20,357.40 and 7,005.20 is: 10,499.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.40 : 20,357.40 = 7,005.20 : x
  2. Step 2: Convert to fraction form
    13,582.40/20,357.40 = 7,005.20/x
  3. Step 3: Cross multiply
    13,582.40x = 20,357.40 × 7,005.20
  4. Step 4: Simplify right side
    13,582.40x = 142,607,658.48
  5. Step 5: Solve for x
    x = 142,607,658.48/13,582.40
  6. Step 6: Final answer
    x = 10,499.44

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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.