Home / 39,890.54-55,050.08-21,986.69

Finding the Fourth Proportional to 39,890.54, 55,050.08 and 21,986.69

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Solution

The fourth proportional to 39,890.54, 55,050.08 and 21,986.69 is: 30,342.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.54 : 55,050.08 = 21,986.69 : x
  2. Step 2: Convert to fraction form
    39,890.54/55,050.08 = 21,986.69/x
  3. Step 3: Cross multiply
    39,890.54x = 55,050.08 × 21,986.69
  4. Step 4: Simplify right side
    39,890.54x = 1,210,368,658.25
  5. Step 5: Solve for x
    x = 1,210,368,658.25/39,890.54
  6. Step 6: Final answer
    x = 30,342.25

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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.