Home / 21,061.80-31,583.93-8,573.36

Finding the Fourth Proportional to 21,061.80, 31,583.93 and 8,573.36

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Solution

The fourth proportional to 21,061.80, 31,583.93 and 8,573.36 is: 12,856.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.80 : 31,583.93 = 8,573.36 : x
  2. Step 2: Convert to fraction form
    21,061.80/31,583.93 = 8,573.36/x
  3. Step 3: Cross multiply
    21,061.80x = 31,583.93 × 8,573.36
  4. Step 4: Simplify right side
    21,061.80x = 270,780,201.32
  5. Step 5: Solve for x
    x = 270,780,201.32/21,061.80
  6. Step 6: Final answer
    x = 12,856.46

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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.