Home / 21,033.93-31,541.67-7,877.08

Finding the Fourth Proportional to 21,033.93, 31,541.67 and 7,877.08

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Solution

The fourth proportional to 21,033.93, 31,541.67 and 7,877.08 is: 11,812.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.93 : 31,541.67 = 7,877.08 : x
  2. Step 2: Convert to fraction form
    21,033.93/31,541.67 = 7,877.08/x
  3. Step 3: Cross multiply
    21,033.93x = 31,541.67 × 7,877.08
  4. Step 4: Simplify right side
    21,033.93x = 248,456,257.92
  5. Step 5: Solve for x
    x = 248,456,257.92/21,033.93
  6. Step 6: Final answer
    x = 11,812.17

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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.