Home / 30,281.70-41,789.73-18,947.58

Finding the Fourth Proportional to 30,281.70, 41,789.73 and 18,947.58

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Solution

The fourth proportional to 30,281.70, 41,789.73 and 18,947.58 is: 26,148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.70 : 41,789.73 = 18,947.58 : x
  2. Step 2: Convert to fraction form
    30,281.70/41,789.73 = 18,947.58/x
  3. Step 3: Cross multiply
    30,281.70x = 41,789.73 × 18,947.58
  4. Step 4: Simplify right side
    30,281.70x = 791,814,252.35
  5. Step 5: Solve for x
    x = 791,814,252.35/30,281.70
  6. Step 6: Final answer
    x = 26,148.28

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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.