Home / 21,072.15-31,612.68-6,282.23

Finding the Fourth Proportional to 21,072.15, 31,612.68 and 6,282.23

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Solution

The fourth proportional to 21,072.15, 31,612.68 and 6,282.23 is: 9,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.15 : 31,612.68 = 6,282.23 : x
  2. Step 2: Convert to fraction form
    21,072.15/31,612.68 = 6,282.23/x
  3. Step 3: Cross multiply
    21,072.15x = 31,612.68 × 6,282.23
  4. Step 4: Simplify right side
    21,072.15x = 198,597,968.61
  5. Step 5: Solve for x
    x = 198,597,968.61/21,072.15
  6. Step 6: Final answer
    x = 9,424.67

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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.