Home / 20,889.61-28,825.77-11,937.07

Finding the Fourth Proportional to 20,889.61, 28,825.77 and 11,937.07

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Solution

The fourth proportional to 20,889.61, 28,825.77 and 11,937.07 is: 16,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.61 : 28,825.77 = 11,937.07 : x
  2. Step 2: Convert to fraction form
    20,889.61/28,825.77 = 11,937.07/x
  3. Step 3: Cross multiply
    20,889.61x = 28,825.77 × 11,937.07
  4. Step 4: Simplify right side
    20,889.61x = 344,095,234.29
  5. Step 5: Solve for x
    x = 344,095,234.29/20,889.61
  6. Step 6: Final answer
    x = 16,472.08

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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.