Home / 39,889.87-55,045.77-21,984.82

Finding the Fourth Proportional to 39,889.87, 55,045.77 and 21,984.82

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Solution

The fourth proportional to 39,889.87, 55,045.77 and 21,984.82 is: 30,337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.87 : 55,045.77 = 21,984.82 : x
  2. Step 2: Convert to fraction form
    39,889.87/55,045.77 = 21,984.82/x
  3. Step 3: Cross multiply
    39,889.87x = 55,045.77 × 21,984.82
  4. Step 4: Simplify right side
    39,889.87x = 1,210,171,069.98
  5. Step 5: Solve for x
    x = 1,210,171,069.98/39,889.87
  6. Step 6: Final answer
    x = 30,337.81

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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.