Home / 39,091.47-53,946.20-21,186.46

Finding the Fourth Proportional to 39,091.47, 53,946.20 and 21,186.46

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Solution

The fourth proportional to 39,091.47, 53,946.20 and 21,186.46 is: 29,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,091.47 : 53,946.20 = 21,186.46 : x
  2. Step 2: Convert to fraction form
    39,091.47/53,946.20 = 21,186.46/x
  3. Step 3: Cross multiply
    39,091.47x = 53,946.20 × 21,186.46
  4. Step 4: Simplify right side
    39,091.47x = 1,142,929,128.85
  5. Step 5: Solve for x
    x = 1,142,929,128.85/39,091.47
  6. Step 6: Final answer
    x = 29,237.31

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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.