Home / 39,862.69-55,010.51-21,957.69

Finding the Fourth Proportional to 39,862.69, 55,010.51 and 21,957.69

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Solution

The fourth proportional to 39,862.69, 55,010.51 and 21,957.69 is: 30,301.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.69 : 55,010.51 = 21,957.69 : x
  2. Step 2: Convert to fraction form
    39,862.69/55,010.51 = 21,957.69/x
  3. Step 3: Cross multiply
    39,862.69x = 55,010.51 × 21,957.69
  4. Step 4: Simplify right side
    39,862.69x = 1,207,903,725.32
  5. Step 5: Solve for x
    x = 1,207,903,725.32/39,862.69
  6. Step 6: Final answer
    x = 30,301.61

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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.