Home / 31,677.82-43,702.93-20,345.73

Finding the Fourth Proportional to 31,677.82, 43,702.93 and 20,345.73

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Solution

The fourth proportional to 31,677.82, 43,702.93 and 20,345.73 is: 28,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,677.82 : 43,702.93 = 20,345.73 : x
  2. Step 2: Convert to fraction form
    31,677.82/43,702.93 = 20,345.73/x
  3. Step 3: Cross multiply
    31,677.82x = 43,702.93 × 20,345.73
  4. Step 4: Simplify right side
    31,677.82x = 889,168,178.59
  5. Step 5: Solve for x
    x = 889,168,178.59/31,677.82
  6. Step 6: Final answer
    x = 28,069.11

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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.