Home / 31,490.08-43,477.22-19,571.20

Finding the Fourth Proportional to 31,490.08, 43,477.22 and 19,571.20

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Solution

The fourth proportional to 31,490.08, 43,477.22 and 19,571.20 is: 27,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.08 : 43,477.22 = 19,571.20 : x
  2. Step 2: Convert to fraction form
    31,490.08/43,477.22 = 19,571.20/x
  3. Step 3: Cross multiply
    31,490.08x = 43,477.22 × 19,571.20
  4. Step 4: Simplify right side
    31,490.08x = 850,901,368.06
  5. Step 5: Solve for x
    x = 850,901,368.06/31,490.08
  6. Step 6: Final answer
    x = 27,021.25

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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.