Home / 15,701.31-21,667.79-8,628.18

Finding the Fourth Proportional to 15,701.31, 21,667.79 and 8,628.18

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Solution

The fourth proportional to 15,701.31, 21,667.79 and 8,628.18 is: 11,906.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.31 : 21,667.79 = 8,628.18 : x
  2. Step 2: Convert to fraction form
    15,701.31/21,667.79 = 8,628.18/x
  3. Step 3: Cross multiply
    15,701.31x = 21,667.79 × 8,628.18
  4. Step 4: Simplify right side
    15,701.31x = 186,953,549.18
  5. Step 5: Solve for x
    x = 186,953,549.18/15,701.31
  6. Step 6: Final answer
    x = 11,906.88

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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.