Home / 31,663.85-43,677.06-20,908.82

Finding the Fourth Proportional to 31,663.85, 43,677.06 and 20,908.82

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Solution

The fourth proportional to 31,663.85, 43,677.06 and 20,908.82 is: 28,841.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.85 : 43,677.06 = 20,908.82 : x
  2. Step 2: Convert to fraction form
    31,663.85/43,677.06 = 20,908.82/x
  3. Step 3: Cross multiply
    31,663.85x = 43,677.06 × 20,908.82
  4. Step 4: Simplify right side
    31,663.85x = 913,235,567.28
  5. Step 5: Solve for x
    x = 913,235,567.28/31,663.85
  6. Step 6: Final answer
    x = 28,841.59

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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.