Home / 21,153.57-31,730.94-6,160.09

Finding the Fourth Proportional to 21,153.57, 31,730.94 and 6,160.09

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Solution

The fourth proportional to 21,153.57, 31,730.94 and 6,160.09 is: 9,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.57 : 31,730.94 = 6,160.09 : x
  2. Step 2: Convert to fraction form
    21,153.57/31,730.94 = 6,160.09/x
  3. Step 3: Cross multiply
    21,153.57x = 31,730.94 × 6,160.09
  4. Step 4: Simplify right side
    21,153.57x = 195,465,489.61
  5. Step 5: Solve for x
    x = 195,465,489.61/21,153.57
  6. Step 6: Final answer
    x = 9,240.31

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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.