Home / 20,835.87-31,257.05-6,981.63

Finding the Fourth Proportional to 20,835.87, 31,257.05 and 6,981.63

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Solution

The fourth proportional to 20,835.87, 31,257.05 and 6,981.63 is: 10,473.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.87 : 31,257.05 = 6,981.63 : x
  2. Step 2: Convert to fraction form
    20,835.87/31,257.05 = 6,981.63/x
  3. Step 3: Cross multiply
    20,835.87x = 31,257.05 × 6,981.63
  4. Step 4: Simplify right side
    20,835.87x = 218,225,157.99
  5. Step 5: Solve for x
    x = 218,225,157.99/20,835.87
  6. Step 6: Final answer
    x = 10,473.53

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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.