Home / 31,490.16-43,468.22-20,883.36

Finding the Fourth Proportional to 31,490.16, 43,468.22 and 20,883.36

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Solution

The fourth proportional to 31,490.16, 43,468.22 and 20,883.36 is: 28,826.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.16 : 43,468.22 = 20,883.36 : x
  2. Step 2: Convert to fraction form
    31,490.16/43,468.22 = 20,883.36/x
  3. Step 3: Cross multiply
    31,490.16x = 43,468.22 × 20,883.36
  4. Step 4: Simplify right side
    31,490.16x = 907,762,486.82
  5. Step 5: Solve for x
    x = 907,762,486.82/31,490.16
  6. Step 6: Final answer
    x = 28,826.86

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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.