Home / 31,809.16-43,905.54-19,865.80

Finding the Fourth Proportional to 31,809.16, 43,905.54 and 19,865.80

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Solution

The fourth proportional to 31,809.16, 43,905.54 and 19,865.80 is: 27,420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.16 : 43,905.54 = 19,865.80 : x
  2. Step 2: Convert to fraction form
    31,809.16/43,905.54 = 19,865.80/x
  3. Step 3: Cross multiply
    31,809.16x = 43,905.54 × 19,865.80
  4. Step 4: Simplify right side
    31,809.16x = 872,218,676.53
  5. Step 5: Solve for x
    x = 872,218,676.53/31,809.16
  6. Step 6: Final answer
    x = 27,420.36

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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.