Home / 39,889.62-55,045.42-21,984.57

Finding the Fourth Proportional to 39,889.62, 55,045.42 and 21,984.57

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Solution

The fourth proportional to 39,889.62, 55,045.42 and 21,984.57 is: 30,337.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.62 : 55,045.42 = 21,984.57 : x
  2. Step 2: Convert to fraction form
    39,889.62/55,045.42 = 21,984.57/x
  3. Step 3: Cross multiply
    39,889.62x = 55,045.42 × 21,984.57
  4. Step 4: Simplify right side
    39,889.62x = 1,210,149,889.17
  5. Step 5: Solve for x
    x = 1,210,149,889.17/39,889.62
  6. Step 6: Final answer
    x = 30,337.46

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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.