Home / 15,935.16-21,991.23-9,221.10

Finding the Fourth Proportional to 15,935.16, 21,991.23 and 9,221.10

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Solution

The fourth proportional to 15,935.16, 21,991.23 and 9,221.10 is: 12,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.16 : 21,991.23 = 9,221.10 : x
  2. Step 2: Convert to fraction form
    15,935.16/21,991.23 = 9,221.10/x
  3. Step 3: Cross multiply
    15,935.16x = 21,991.23 × 9,221.10
  4. Step 4: Simplify right side
    15,935.16x = 202,783,330.95
  5. Step 5: Solve for x
    x = 202,783,330.95/15,935.16
  6. Step 6: Final answer
    x = 12,725.53

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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.