Home / 15,682.40-21,640.92-9,309.26

Finding the Fourth Proportional to 15,682.40, 21,640.92 and 9,309.26

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Solution

The fourth proportional to 15,682.40, 21,640.92 and 9,309.26 is: 12,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.40 : 21,640.92 = 9,309.26 : x
  2. Step 2: Convert to fraction form
    15,682.40/21,640.92 = 9,309.26/x
  3. Step 3: Cross multiply
    15,682.40x = 21,640.92 × 9,309.26
  4. Step 4: Simplify right side
    15,682.40x = 201,460,970.11
  5. Step 5: Solve for x
    x = 201,460,970.11/15,682.40
  6. Step 6: Final answer
    x = 12,846.31

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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.