Home / 21,013.43-31,519.45-8,533.15

Finding the Fourth Proportional to 21,013.43, 31,519.45 and 8,533.15

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Solution

The fourth proportional to 21,013.43, 31,519.45 and 8,533.15 is: 12,799.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.43 : 31,519.45 = 8,533.15 : x
  2. Step 2: Convert to fraction form
    21,013.43/31,519.45 = 8,533.15/x
  3. Step 3: Cross multiply
    21,013.43x = 31,519.45 × 8,533.15
  4. Step 4: Simplify right side
    21,013.43x = 268,960,194.77
  5. Step 5: Solve for x
    x = 268,960,194.77/21,013.43
  6. Step 6: Final answer
    x = 12,799.44

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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.