Home / 15,659.31-21,615.32-9,371.69

Finding the Fourth Proportional to 15,659.31, 21,615.32 and 9,371.69

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Solution

The fourth proportional to 15,659.31, 21,615.32 and 9,371.69 is: 12,936.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.31 : 21,615.32 = 9,371.69 : x
  2. Step 2: Convert to fraction form
    15,659.31/21,615.32 = 9,371.69/x
  3. Step 3: Cross multiply
    15,659.31x = 21,615.32 × 9,371.69
  4. Step 4: Simplify right side
    15,659.31x = 202,572,078.29
  5. Step 5: Solve for x
    x = 202,572,078.29/15,659.31
  6. Step 6: Final answer
    x = 12,936.21

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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.