Home / 39,913.81-55,081.43-22,009.45

Finding the Fourth Proportional to 39,913.81, 55,081.43 and 22,009.45

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Solution

The fourth proportional to 39,913.81, 55,081.43 and 22,009.45 is: 30,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,913.81 : 55,081.43 = 22,009.45 : x
  2. Step 2: Convert to fraction form
    39,913.81/55,081.43 = 22,009.45/x
  3. Step 3: Cross multiply
    39,913.81x = 55,081.43 × 22,009.45
  4. Step 4: Simplify right side
    39,913.81x = 1,212,311,979.51
  5. Step 5: Solve for x
    x = 1,212,311,979.51/39,913.81
  6. Step 6: Final answer
    x = 30,373.25

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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.