Home / 20,077.40-30,116.45-5,285.76

Finding the Fourth Proportional to 20,077.40, 30,116.45 and 5,285.76

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Solution

The fourth proportional to 20,077.40, 30,116.45 and 5,285.76 is: 7,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.40 : 30,116.45 = 5,285.76 : x
  2. Step 2: Convert to fraction form
    20,077.40/30,116.45 = 5,285.76/x
  3. Step 3: Cross multiply
    20,077.40x = 30,116.45 × 5,285.76
  4. Step 4: Simplify right side
    20,077.40x = 159,188,300.32
  5. Step 5: Solve for x
    x = 159,188,300.32/20,077.40
  6. Step 6: Final answer
    x = 7,928.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.