Home / 20,349.92-30,529.53-7,870.07

Finding the Fourth Proportional to 20,349.92, 30,529.53 and 7,870.07

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Solution

The fourth proportional to 20,349.92, 30,529.53 and 7,870.07 is: 11,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.92 : 30,529.53 = 7,870.07 : x
  2. Step 2: Convert to fraction form
    20,349.92/30,529.53 = 7,870.07/x
  3. Step 3: Cross multiply
    20,349.92x = 30,529.53 × 7,870.07
  4. Step 4: Simplify right side
    20,349.92x = 240,269,385.52
  5. Step 5: Solve for x
    x = 240,269,385.52/20,349.92
  6. Step 6: Final answer
    x = 11,806.90

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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.