Home / 15,331.24-21,157.09-8,962.21

Finding the Fourth Proportional to 15,331.24, 21,157.09 and 8,962.21

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Solution

The fourth proportional to 15,331.24, 21,157.09 and 8,962.21 is: 12,367.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.24 : 21,157.09 = 8,962.21 : x
  2. Step 2: Convert to fraction form
    15,331.24/21,157.09 = 8,962.21/x
  3. Step 3: Cross multiply
    15,331.24x = 21,157.09 × 8,962.21
  4. Step 4: Simplify right side
    15,331.24x = 189,614,283.57
  5. Step 5: Solve for x
    x = 189,614,283.57/15,331.24
  6. Step 6: Final answer
    x = 12,367.84

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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.