Home / 28,644.88-43,033.20-20,345.08

Finding the Fourth Proportional to 28,644.88, 43,033.20 and 20,345.08

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Solution

The fourth proportional to 28,644.88, 43,033.20 and 20,345.08 is: 30,564.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,644.88 : 43,033.20 = 20,345.08 : x
  2. Step 2: Convert to fraction form
    28,644.88/43,033.20 = 20,345.08/x
  3. Step 3: Cross multiply
    28,644.88x = 43,033.20 × 20,345.08
  4. Step 4: Simplify right side
    28,644.88x = 875,513,896.66
  5. Step 5: Solve for x
    x = 875,513,896.66/28,644.88
  6. Step 6: Final answer
    x = 30,564.41

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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.