Home / 39,777.32-54,896.20-21,875.48

Finding the Fourth Proportional to 39,777.32, 54,896.20 and 21,875.48

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Solution

The fourth proportional to 39,777.32, 54,896.20 and 21,875.48 is: 30,190.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.32 : 54,896.20 = 21,875.48 : x
  2. Step 2: Convert to fraction form
    39,777.32/54,896.20 = 21,875.48/x
  3. Step 3: Cross multiply
    39,777.32x = 54,896.20 × 21,875.48
  4. Step 4: Simplify right side
    39,777.32x = 1,200,880,725.18
  5. Step 5: Solve for x
    x = 1,200,880,725.18/39,777.32
  6. Step 6: Final answer
    x = 30,190.09

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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.