Home / 15,821.80-21,827.22-9,530.56

Finding the Fourth Proportional to 15,821.80, 21,827.22 and 9,530.56

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Solution

The fourth proportional to 15,821.80, 21,827.22 and 9,530.56 is: 13,148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.80 : 21,827.22 = 9,530.56 : x
  2. Step 2: Convert to fraction form
    15,821.80/21,827.22 = 9,530.56/x
  3. Step 3: Cross multiply
    15,821.80x = 21,827.22 × 9,530.56
  4. Step 4: Simplify right side
    15,821.80x = 208,025,629.84
  5. Step 5: Solve for x
    x = 208,025,629.84/15,821.80
  6. Step 6: Final answer
    x = 13,148.04

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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.