Home / 28,939.08-43,415.16-9,218.76

Finding the Fourth Proportional to 28,939.08, 43,415.16 and 9,218.76

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Solution

The fourth proportional to 28,939.08, 43,415.16 and 9,218.76 is: 13,830.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.08 : 43,415.16 = 9,218.76 : x
  2. Step 2: Convert to fraction form
    28,939.08/43,415.16 = 9,218.76/x
  3. Step 3: Cross multiply
    28,939.08x = 43,415.16 × 9,218.76
  4. Step 4: Simplify right side
    28,939.08x = 400,233,940.40
  5. Step 5: Solve for x
    x = 400,233,940.40/28,939.08
  6. Step 6: Final answer
    x = 13,830.22

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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.