Home / 39,889.03-55,047.23-21,984.69

Finding the Fourth Proportional to 39,889.03, 55,047.23 and 21,984.69

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Solution

The fourth proportional to 39,889.03, 55,047.23 and 21,984.69 is: 30,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.03 : 55,047.23 = 21,984.69 : x
  2. Step 2: Convert to fraction form
    39,889.03/55,047.23 = 21,984.69/x
  3. Step 3: Cross multiply
    39,889.03x = 55,047.23 × 21,984.69
  4. Step 4: Simplify right side
    39,889.03x = 1,210,196,286.91
  5. Step 5: Solve for x
    x = 1,210,196,286.91/39,889.03
  6. Step 6: Final answer
    x = 30,339.08

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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.