Home / 15,726.24-21,696.72-9,755.76

Finding the Fourth Proportional to 15,726.24, 21,696.72 and 9,755.76

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Solution

The fourth proportional to 15,726.24, 21,696.72 and 9,755.76 is: 13,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.24 : 21,696.72 = 9,755.76 : x
  2. Step 2: Convert to fraction form
    15,726.24/21,696.72 = 9,755.76/x
  3. Step 3: Cross multiply
    15,726.24x = 21,696.72 × 9,755.76
  4. Step 4: Simplify right side
    15,726.24x = 211,667,993.11
  5. Step 5: Solve for x
    x = 211,667,993.11/15,726.24
  6. Step 6: Final answer
    x = 13,459.54

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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.