Home / 20,207.61-30,317.42-10,353.81

Finding the Fourth Proportional to 20,207.61, 30,317.42 and 10,353.81

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Solution

The fourth proportional to 20,207.61, 30,317.42 and 10,353.81 is: 15,533.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.61 : 30,317.42 = 10,353.81 : x
  2. Step 2: Convert to fraction form
    20,207.61/30,317.42 = 10,353.81/x
  3. Step 3: Cross multiply
    20,207.61x = 30,317.42 × 10,353.81
  4. Step 4: Simplify right side
    20,207.61x = 313,900,754.60
  5. Step 5: Solve for x
    x = 313,900,754.60/20,207.61
  6. Step 6: Final answer
    x = 15,533.79

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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.