Home / 15,331.00-21,156.09-8,958.18

Finding the Fourth Proportional to 15,331.00, 21,156.09 and 8,958.18

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Solution

The fourth proportional to 15,331.00, 21,156.09 and 8,958.18 is: 12,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.00 : 21,156.09 = 8,958.18 : x
  2. Step 2: Convert to fraction form
    15,331.00/21,156.09 = 8,958.18/x
  3. Step 3: Cross multiply
    15,331.00x = 21,156.09 × 8,958.18
  4. Step 4: Simplify right side
    15,331.00x = 189,520,064.64
  5. Step 5: Solve for x
    x = 189,520,064.64/15,331.00
  6. Step 6: Final answer
    x = 12,361.89

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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.