Home / 21,002.07-31,516.30-8,522.15

Finding the Fourth Proportional to 21,002.07, 31,516.30 and 8,522.15

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Solution

The fourth proportional to 21,002.07, 31,516.30 and 8,522.15 is: 12,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.07 : 31,516.30 = 8,522.15 : x
  2. Step 2: Convert to fraction form
    21,002.07/31,516.30 = 8,522.15/x
  3. Step 3: Cross multiply
    21,002.07x = 31,516.30 × 8,522.15
  4. Step 4: Simplify right side
    21,002.07x = 268,586,636.05
  5. Step 5: Solve for x
    x = 268,586,636.05/21,002.07
  6. Step 6: Final answer
    x = 12,788.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.