Home / 39,894.23-55,056.50-21,989.19

Finding the Fourth Proportional to 39,894.23, 55,056.50 and 21,989.19

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Solution

The fourth proportional to 39,894.23, 55,056.50 and 21,989.19 is: 30,346.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.23 : 55,056.50 = 21,989.19 : x
  2. Step 2: Convert to fraction form
    39,894.23/55,056.50 = 21,989.19/x
  3. Step 3: Cross multiply
    39,894.23x = 55,056.50 × 21,989.19
  4. Step 4: Simplify right side
    39,894.23x = 1,210,648,018.21
  5. Step 5: Solve for x
    x = 1,210,648,018.21/39,894.23
  6. Step 6: Final answer
    x = 30,346.44

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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.