Home / 21,148.83-31,727.70-8,000.91

Finding the Fourth Proportional to 21,148.83, 31,727.70 and 8,000.91

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Solution

The fourth proportional to 21,148.83, 31,727.70 and 8,000.91 is: 12,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.83 : 31,727.70 = 8,000.91 : x
  2. Step 2: Convert to fraction form
    21,148.83/31,727.70 = 8,000.91/x
  3. Step 3: Cross multiply
    21,148.83x = 31,727.70 × 8,000.91
  4. Step 4: Simplify right side
    21,148.83x = 253,850,472.21
  5. Step 5: Solve for x
    x = 253,850,472.21/21,148.83
  6. Step 6: Final answer
    x = 12,003.05

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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.