Home / 39,890.07-55,048.37-21,984.66

Finding the Fourth Proportional to 39,890.07, 55,048.37 and 21,984.66

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Solution

The fourth proportional to 39,890.07, 55,048.37 and 21,984.66 is: 30,338.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.07 : 55,048.37 = 21,984.66 : x
  2. Step 2: Convert to fraction form
    39,890.07/55,048.37 = 21,984.66/x
  3. Step 3: Cross multiply
    39,890.07x = 55,048.37 × 21,984.66
  4. Step 4: Simplify right side
    39,890.07x = 1,210,219,588.08
  5. Step 5: Solve for x
    x = 1,210,219,588.08/39,890.07
  6. Step 6: Final answer
    x = 30,338.87

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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.