Home / 15,228.88-21,020.31-8,856.96

Finding the Fourth Proportional to 15,228.88, 21,020.31 and 8,856.96

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Solution

The fourth proportional to 15,228.88, 21,020.31 and 8,856.96 is: 12,225.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.88 : 21,020.31 = 8,856.96 : x
  2. Step 2: Convert to fraction form
    15,228.88/21,020.31 = 8,856.96/x
  3. Step 3: Cross multiply
    15,228.88x = 21,020.31 × 8,856.96
  4. Step 4: Simplify right side
    15,228.88x = 186,176,000.57
  5. Step 5: Solve for x
    x = 186,176,000.57/15,228.88
  6. Step 6: Final answer
    x = 12,225.19

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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.