Home / 39,409.05-54,386.69-21,504.36

Finding the Fourth Proportional to 39,409.05, 54,386.69 and 21,504.36

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Solution

The fourth proportional to 39,409.05, 54,386.69 and 21,504.36 is: 29,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.05 : 54,386.69 = 21,504.36 : x
  2. Step 2: Convert to fraction form
    39,409.05/54,386.69 = 21,504.36/x
  3. Step 3: Cross multiply
    39,409.05x = 54,386.69 × 21,504.36
  4. Step 4: Simplify right side
    39,409.05x = 1,169,550,960.97
  5. Step 5: Solve for x
    x = 1,169,550,960.97/39,409.05
  6. Step 6: Final answer
    x = 29,677.22

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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.