Home / 39,899.12-55,060.63-21,995.42

Finding the Fourth Proportional to 39,899.12, 55,060.63 and 21,995.42

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Solution

The fourth proportional to 39,899.12, 55,060.63 and 21,995.42 is: 30,353.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.12 : 55,060.63 = 21,995.42 : x
  2. Step 2: Convert to fraction form
    39,899.12/55,060.63 = 21,995.42/x
  3. Step 3: Cross multiply
    39,899.12x = 55,060.63 × 21,995.42
  4. Step 4: Simplify right side
    39,899.12x = 1,211,081,352.02
  5. Step 5: Solve for x
    x = 1,211,081,352.02/39,899.12
  6. Step 6: Final answer
    x = 30,353.59

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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.