Home / 37,048.32-51,129.63-21,129.12

Finding the Fourth Proportional to 37,048.32, 51,129.63 and 21,129.12

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Solution

The fourth proportional to 37,048.32, 51,129.63 and 21,129.12 is: 29,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,048.32 : 51,129.63 = 21,129.12 : x
  2. Step 2: Convert to fraction form
    37,048.32/51,129.63 = 21,129.12/x
  3. Step 3: Cross multiply
    37,048.32x = 51,129.63 × 21,129.12
  4. Step 4: Simplify right side
    37,048.32x = 1,080,324,087.83
  5. Step 5: Solve for x
    x = 1,080,324,087.83/37,048.32
  6. Step 6: Final answer
    x = 29,159.87

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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.