Home / 15,383.84-21,215.76-10,076.72

Finding the Fourth Proportional to 15,383.84, 21,215.76 and 10,076.72

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Solution

The fourth proportional to 15,383.84, 21,215.76 and 10,076.72 is: 13,896.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.84 : 21,215.76 = 10,076.72 : x
  2. Step 2: Convert to fraction form
    15,383.84/21,215.76 = 10,076.72/x
  3. Step 3: Cross multiply
    15,383.84x = 21,215.76 × 10,076.72
  4. Step 4: Simplify right side
    15,383.84x = 213,785,273.11
  5. Step 5: Solve for x
    x = 213,785,273.11/15,383.84
  6. Step 6: Final answer
    x = 13,896.74

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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.