Home / 20,699.19-31,046.22-5,909.40

Finding the Fourth Proportional to 20,699.19, 31,046.22 and 5,909.40

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Solution

The fourth proportional to 20,699.19, 31,046.22 and 5,909.40 is: 8,863.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.19 : 31,046.22 = 5,909.40 : x
  2. Step 2: Convert to fraction form
    20,699.19/31,046.22 = 5,909.40/x
  3. Step 3: Cross multiply
    20,699.19x = 31,046.22 × 5,909.40
  4. Step 4: Simplify right side
    20,699.19x = 183,464,532.47
  5. Step 5: Solve for x
    x = 183,464,532.47/20,699.19
  6. Step 6: Final answer
    x = 8,863.37

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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.