Home / 20,929.05-31,371.48-6,885.36

Finding the Fourth Proportional to 20,929.05, 31,371.48 and 6,885.36

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Solution

The fourth proportional to 20,929.05, 31,371.48 and 6,885.36 is: 10,320.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.05 : 31,371.48 = 6,885.36 : x
  2. Step 2: Convert to fraction form
    20,929.05/31,371.48 = 6,885.36/x
  3. Step 3: Cross multiply
    20,929.05x = 31,371.48 × 6,885.36
  4. Step 4: Simplify right side
    20,929.05x = 216,003,933.53
  5. Step 5: Solve for x
    x = 216,003,933.53/20,929.05
  6. Step 6: Final answer
    x = 10,320.77

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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.