Home / 38,129.51-52,614.39-21,129.47

Finding the Fourth Proportional to 38,129.51, 52,614.39 and 21,129.47

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Solution

The fourth proportional to 38,129.51, 52,614.39 and 21,129.47 is: 29,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.51 : 52,614.39 = 21,129.47 : x
  2. Step 2: Convert to fraction form
    38,129.51/52,614.39 = 21,129.47/x
  3. Step 3: Cross multiply
    38,129.51x = 52,614.39 × 21,129.47
  4. Step 4: Simplify right side
    38,129.51x = 1,111,714,188.54
  5. Step 5: Solve for x
    x = 1,111,714,188.54/38,129.51
  6. Step 6: Final answer
    x = 29,156.27

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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.