Home / 21,040.20-31,533.03-8,545.59

Finding the Fourth Proportional to 21,040.20, 31,533.03 and 8,545.59

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Solution

The fourth proportional to 21,040.20, 31,533.03 and 8,545.59 is: 12,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.20 : 31,533.03 = 8,545.59 : x
  2. Step 2: Convert to fraction form
    21,040.20/31,533.03 = 8,545.59/x
  3. Step 3: Cross multiply
    21,040.20x = 31,533.03 × 8,545.59
  4. Step 4: Simplify right side
    21,040.20x = 269,468,464.09
  5. Step 5: Solve for x
    x = 269,468,464.09/21,040.20
  6. Step 6: Final answer
    x = 12,807.31

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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.