Home / 30,817.56-42,535.10-20,043.70

Finding the Fourth Proportional to 30,817.56, 42,535.10 and 20,043.70

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Solution

The fourth proportional to 30,817.56, 42,535.10 and 20,043.70 is: 27,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,817.56 : 42,535.10 = 20,043.70 : x
  2. Step 2: Convert to fraction form
    30,817.56/42,535.10 = 20,043.70/x
  3. Step 3: Cross multiply
    30,817.56x = 42,535.10 × 20,043.70
  4. Step 4: Simplify right side
    30,817.56x = 852,560,783.87
  5. Step 5: Solve for x
    x = 852,560,783.87/30,817.56
  6. Step 6: Final answer
    x = 27,664.77

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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.