Home / 21,220.25-31,834.94-6,430.32

Finding the Fourth Proportional to 21,220.25, 31,834.94 and 6,430.32

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Solution

The fourth proportional to 21,220.25, 31,834.94 and 6,430.32 is: 9,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.25 : 31,834.94 = 6,430.32 : x
  2. Step 2: Convert to fraction form
    21,220.25/31,834.94 = 6,430.32/x
  3. Step 3: Cross multiply
    21,220.25x = 31,834.94 × 6,430.32
  4. Step 4: Simplify right side
    21,220.25x = 204,708,819.23
  5. Step 5: Solve for x
    x = 204,708,819.23/21,220.25
  6. Step 6: Final answer
    x = 9,646.86

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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.