Home / 20,922.84-31,384.22-5,340.47

Finding the Fourth Proportional to 20,922.84, 31,384.22 and 5,340.47

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Solution

The fourth proportional to 20,922.84, 31,384.22 and 5,340.47 is: 8,010.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.84 : 31,384.22 = 5,340.47 : x
  2. Step 2: Convert to fraction form
    20,922.84/31,384.22 = 5,340.47/x
  3. Step 3: Cross multiply
    20,922.84x = 31,384.22 × 5,340.47
  4. Step 4: Simplify right side
    20,922.84x = 167,606,301.76
  5. Step 5: Solve for x
    x = 167,606,301.76/20,922.84
  6. Step 6: Final answer
    x = 8,010.69

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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.