Home / 31,480.08-43,463.40-19,561.20

Finding the Fourth Proportional to 31,480.08, 43,463.40 and 19,561.20

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Solution

The fourth proportional to 31,480.08, 43,463.40 and 19,561.20 is: 27,007.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.08 : 43,463.40 = 19,561.20 : x
  2. Step 2: Convert to fraction form
    31,480.08/43,463.40 = 19,561.20/x
  3. Step 3: Cross multiply
    31,480.08x = 43,463.40 × 19,561.20
  4. Step 4: Simplify right side
    31,480.08x = 850,196,260.08
  5. Step 5: Solve for x
    x = 850,196,260.08/31,480.08
  6. Step 6: Final answer
    x = 27,007.44

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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.