Home / 22,392.08-30,905.16-12,961.52

Finding the Fourth Proportional to 22,392.08, 30,905.16 and 12,961.52

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Solution

The fourth proportional to 22,392.08, 30,905.16 and 12,961.52 is: 17,889.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,392.08 : 30,905.16 = 12,961.52 : x
  2. Step 2: Convert to fraction form
    22,392.08/30,905.16 = 12,961.52/x
  3. Step 3: Cross multiply
    22,392.08x = 30,905.16 × 12,961.52
  4. Step 4: Simplify right side
    22,392.08x = 400,577,849.44
  5. Step 5: Solve for x
    x = 400,577,849.44/22,392.08
  6. Step 6: Final answer
    x = 17,889.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.