Home / 21,019.80-31,539.44-8,548.36

Finding the Fourth Proportional to 21,019.80, 31,539.44 and 8,548.36

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Solution

The fourth proportional to 21,019.80, 31,539.44 and 8,548.36 is: 12,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.80 : 31,539.44 = 8,548.36 : x
  2. Step 2: Convert to fraction form
    21,019.80/31,539.44 = 8,548.36/x
  3. Step 3: Cross multiply
    21,019.80x = 31,539.44 × 8,548.36
  4. Step 4: Simplify right side
    21,019.80x = 269,610,487.32
  5. Step 5: Solve for x
    x = 269,610,487.32/21,019.80
  6. Step 6: Final answer
    x = 12,826.50

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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.