Home / 31,383.32-43,288.63-20,056.28

Finding the Fourth Proportional to 31,383.32, 43,288.63 and 20,056.28

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Solution

The fourth proportional to 31,383.32, 43,288.63 and 20,056.28 is: 27,664.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,383.32 : 43,288.63 = 20,056.28 : x
  2. Step 2: Convert to fraction form
    31,383.32/43,288.63 = 20,056.28/x
  3. Step 3: Cross multiply
    31,383.32x = 43,288.63 × 20,056.28
  4. Step 4: Simplify right side
    31,383.32x = 868,208,617.51
  5. Step 5: Solve for x
    x = 868,208,617.51/31,383.32
  6. Step 6: Final answer
    x = 27,664.66

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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.