Home / 15,527.72-21,428.06-8,813.54

Finding the Fourth Proportional to 15,527.72, 21,428.06 and 8,813.54

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Solution

The fourth proportional to 15,527.72, 21,428.06 and 8,813.54 is: 12,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.72 : 21,428.06 = 8,813.54 : x
  2. Step 2: Convert to fraction form
    15,527.72/21,428.06 = 8,813.54/x
  3. Step 3: Cross multiply
    15,527.72x = 21,428.06 × 8,813.54
  4. Step 4: Simplify right side
    15,527.72x = 188,857,063.93
  5. Step 5: Solve for x
    x = 188,857,063.93/15,527.72
  6. Step 6: Final answer
    x = 12,162.58

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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.