Home / 39,895.47-55,056.11-21,991.11

Finding the Fourth Proportional to 39,895.47, 55,056.11 and 21,991.11

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Solution

The fourth proportional to 39,895.47, 55,056.11 and 21,991.11 is: 30,347.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,895.47 : 55,056.11 = 21,991.11 : x
  2. Step 2: Convert to fraction form
    39,895.47/55,056.11 = 21,991.11/x
  3. Step 3: Cross multiply
    39,895.47x = 55,056.11 × 21,991.11
  4. Step 4: Simplify right side
    39,895.47x = 1,210,744,971.18
  5. Step 5: Solve for x
    x = 1,210,744,971.18/39,895.47
  6. Step 6: Final answer
    x = 30,347.93

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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.