Home / 21,257.88-31,886.87-5,675.46

Finding the Fourth Proportional to 21,257.88, 31,886.87 and 5,675.46

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Solution

The fourth proportional to 21,257.88, 31,886.87 and 5,675.46 is: 8,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.88 : 31,886.87 = 5,675.46 : x
  2. Step 2: Convert to fraction form
    21,257.88/31,886.87 = 5,675.46/x
  3. Step 3: Cross multiply
    21,257.88x = 31,886.87 × 5,675.46
  4. Step 4: Simplify right side
    21,257.88x = 180,972,626.83
  5. Step 5: Solve for x
    x = 180,972,626.83/21,257.88
  6. Step 6: Final answer
    x = 8,513.20

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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.