Home / 15,282.20-21,090.31-8,569.98

Finding the Fourth Proportional to 15,282.20, 21,090.31 and 8,569.98

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Solution

The fourth proportional to 15,282.20, 21,090.31 and 8,569.98 is: 11,827.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.20 : 21,090.31 = 8,569.98 : x
  2. Step 2: Convert to fraction form
    15,282.20/21,090.31 = 8,569.98/x
  3. Step 3: Cross multiply
    15,282.20x = 21,090.31 × 8,569.98
  4. Step 4: Simplify right side
    15,282.20x = 180,743,513.47
  5. Step 5: Solve for x
    x = 180,743,513.47/15,282.20
  6. Step 6: Final answer
    x = 11,827.06

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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.