Home / 21,011.73-31,506.63-6,218.64

Finding the Fourth Proportional to 21,011.73, 31,506.63 and 6,218.64

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Solution

The fourth proportional to 21,011.73, 31,506.63 and 6,218.64 is: 9,324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.73 : 31,506.63 = 6,218.64 : x
  2. Step 2: Convert to fraction form
    21,011.73/31,506.63 = 6,218.64/x
  3. Step 3: Cross multiply
    21,011.73x = 31,506.63 × 6,218.64
  4. Step 4: Simplify right side
    21,011.73x = 195,928,389.58
  5. Step 5: Solve for x
    x = 195,928,389.58/21,011.73
  6. Step 6: Final answer
    x = 9,324.71

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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.