Home / 15,586.12-21,507.81-8,872.43

Finding the Fourth Proportional to 15,586.12, 21,507.81 and 8,872.43

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Solution

The fourth proportional to 15,586.12, 21,507.81 and 8,872.43 is: 12,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.12 : 21,507.81 = 8,872.43 : x
  2. Step 2: Convert to fraction form
    15,586.12/21,507.81 = 8,872.43/x
  3. Step 3: Cross multiply
    15,586.12x = 21,507.81 × 8,872.43
  4. Step 4: Simplify right side
    15,586.12x = 190,826,538.68
  5. Step 5: Solve for x
    x = 190,826,538.68/15,586.12
  6. Step 6: Final answer
    x = 12,243.37

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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.