Home / 39,664.62-59,390.31-20,905.63

Finding the Fourth Proportional to 39,664.62, 59,390.31 and 20,905.63

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Solution

The fourth proportional to 39,664.62, 59,390.31 and 20,905.63 is: 31,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,664.62 : 59,390.31 = 20,905.63 : x
  2. Step 2: Convert to fraction form
    39,664.62/59,390.31 = 20,905.63/x
  3. Step 3: Cross multiply
    39,664.62x = 59,390.31 × 20,905.63
  4. Step 4: Simplify right side
    39,664.62x = 1,241,591,776.37
  5. Step 5: Solve for x
    x = 1,241,591,776.37/39,664.62
  6. Step 6: Final answer
    x = 31,302.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.