Home / 39,898.14-55,056.96-21,992.22

Finding the Fourth Proportional to 39,898.14, 55,056.96 and 21,992.22

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Solution

The fourth proportional to 39,898.14, 55,056.96 and 21,992.22 is: 30,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.14 : 55,056.96 = 21,992.22 : x
  2. Step 2: Convert to fraction form
    39,898.14/55,056.96 = 21,992.22/x
  3. Step 3: Cross multiply
    39,898.14x = 55,056.96 × 21,992.22
  4. Step 4: Simplify right side
    39,898.14x = 1,210,824,776.85
  5. Step 5: Solve for x
    x = 1,210,824,776.85/39,898.14
  6. Step 6: Final answer
    x = 30,347.90

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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.