Home / 15,731.49-21,709.37-9,017.22

Finding the Fourth Proportional to 15,731.49, 21,709.37 and 9,017.22

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Solution

The fourth proportional to 15,731.49, 21,709.37 and 9,017.22 is: 12,443.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.49 : 21,709.37 = 9,017.22 : x
  2. Step 2: Convert to fraction form
    15,731.49/21,709.37 = 9,017.22/x
  3. Step 3: Cross multiply
    15,731.49x = 21,709.37 × 9,017.22
  4. Step 4: Simplify right side
    15,731.49x = 195,758,120.27
  5. Step 5: Solve for x
    x = 195,758,120.27/15,731.49
  6. Step 6: Final answer
    x = 12,443.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.