Home / 15,840.06-21,857.67-9,125.16

Finding the Fourth Proportional to 15,840.06, 21,857.67 and 9,125.16

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Solution

The fourth proportional to 15,840.06, 21,857.67 and 9,125.16 is: 12,591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.06 : 21,857.67 = 9,125.16 : x
  2. Step 2: Convert to fraction form
    15,840.06/21,857.67 = 9,125.16/x
  3. Step 3: Cross multiply
    15,840.06x = 21,857.67 × 9,125.16
  4. Step 4: Simplify right side
    15,840.06x = 199,454,735.98
  5. Step 5: Solve for x
    x = 199,454,735.98/15,840.06
  6. Step 6: Final answer
    x = 12,591.79

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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.