Home / 20,303.31-30,434.31-9,217.89

Finding the Fourth Proportional to 20,303.31, 30,434.31 and 9,217.89

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Solution

The fourth proportional to 20,303.31, 30,434.31 and 9,217.89 is: 13,817.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.31 : 30,434.31 = 9,217.89 : x
  2. Step 2: Convert to fraction form
    20,303.31/30,434.31 = 9,217.89/x
  3. Step 3: Cross multiply
    20,303.31x = 30,434.31 × 9,217.89
  4. Step 4: Simplify right side
    20,303.31x = 280,540,121.81
  5. Step 5: Solve for x
    x = 280,540,121.81/20,303.31
  6. Step 6: Final answer
    x = 13,817.46

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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.