Home / 20,942.65-31,407.31-6,899.58

Finding the Fourth Proportional to 20,942.65, 31,407.31 and 6,899.58

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Solution

The fourth proportional to 20,942.65, 31,407.31 and 6,899.58 is: 10,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.65 : 31,407.31 = 6,899.58 : x
  2. Step 2: Convert to fraction form
    20,942.65/31,407.31 = 6,899.58/x
  3. Step 3: Cross multiply
    20,942.65x = 31,407.31 × 6,899.58
  4. Step 4: Simplify right side
    20,942.65x = 216,697,256.55
  5. Step 5: Solve for x
    x = 216,697,256.55/20,942.65
  6. Step 6: Final answer
    x = 10,347.17

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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.