Home / 30,805.40-42,508.28-22,743.35

Finding the Fourth Proportional to 30,805.40, 42,508.28 and 22,743.35

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Solution

The fourth proportional to 30,805.40, 42,508.28 and 22,743.35 is: 31,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.40 : 42,508.28 = 22,743.35 : x
  2. Step 2: Convert to fraction form
    30,805.40/42,508.28 = 22,743.35/x
  3. Step 3: Cross multiply
    30,805.40x = 42,508.28 × 22,743.35
  4. Step 4: Simplify right side
    30,805.40x = 966,780,565.73
  5. Step 5: Solve for x
    x = 966,780,565.73/30,805.40
  6. Step 6: Final answer
    x = 31,383.48

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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.