Home / 20,320.10-30,459.38-7,835.23

Finding the Fourth Proportional to 20,320.10, 30,459.38 and 7,835.23

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Solution

The fourth proportional to 20,320.10, 30,459.38 and 7,835.23 is: 11,744.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.10 : 30,459.38 = 7,835.23 : x
  2. Step 2: Convert to fraction form
    20,320.10/30,459.38 = 7,835.23/x
  3. Step 3: Cross multiply
    20,320.10x = 30,459.38 × 7,835.23
  4. Step 4: Simplify right side
    20,320.10x = 238,656,246.86
  5. Step 5: Solve for x
    x = 238,656,246.86/20,320.10
  6. Step 6: Final answer
    x = 11,744.84

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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.