Home / 21,033.48-31,555.31-7,885.97

Finding the Fourth Proportional to 21,033.48, 31,555.31 and 7,885.97

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Solution

The fourth proportional to 21,033.48, 31,555.31 and 7,885.97 is: 11,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.48 : 31,555.31 = 7,885.97 : x
  2. Step 2: Convert to fraction form
    21,033.48/31,555.31 = 7,885.97/x
  3. Step 3: Cross multiply
    21,033.48x = 31,555.31 × 7,885.97
  4. Step 4: Simplify right side
    21,033.48x = 248,844,030.79
  5. Step 5: Solve for x
    x = 248,844,030.79/21,033.48
  6. Step 6: Final answer
    x = 11,830.85

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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.