Home / 15,534.62-21,438.99-8,822.36

Finding the Fourth Proportional to 15,534.62, 21,438.99 and 8,822.36

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Solution

The fourth proportional to 15,534.62, 21,438.99 and 8,822.36 is: 12,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.62 : 21,438.99 = 8,822.36 : x
  2. Step 2: Convert to fraction form
    15,534.62/21,438.99 = 8,822.36/x
  3. Step 3: Cross multiply
    15,534.62x = 21,438.99 × 8,822.36
  4. Step 4: Simplify right side
    15,534.62x = 189,142,487.82
  5. Step 5: Solve for x
    x = 189,142,487.82/15,534.62
  6. Step 6: Final answer
    x = 12,175.55

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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.