Home / 39,079.14-53,929.13-21,174.63

Finding the Fourth Proportional to 39,079.14, 53,929.13 and 21,174.63

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Solution

The fourth proportional to 39,079.14, 53,929.13 and 21,174.63 is: 29,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.14 : 53,929.13 = 21,174.63 : x
  2. Step 2: Convert to fraction form
    39,079.14/53,929.13 = 21,174.63/x
  3. Step 3: Cross multiply
    39,079.14x = 53,929.13 × 21,174.63
  4. Step 4: Simplify right side
    39,079.14x = 1,141,929,373.97
  5. Step 5: Solve for x
    x = 1,141,929,373.97/39,079.14
  6. Step 6: Final answer
    x = 29,220.94

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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.