Home / 84,018.44-126,024.40-20,838.72

Finding the Fourth Proportional to 84,018.44, 126,024.40 and 20,838.72

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Solution

The fourth proportional to 84,018.44, 126,024.40 and 20,838.72 is: 31,257.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.44 : 126,024.40 = 20,838.72 : x
  2. Step 2: Convert to fraction form
    84,018.44/126,024.40 = 20,838.72/x
  3. Step 3: Cross multiply
    84,018.44x = 126,024.40 × 20,838.72
  4. Step 4: Simplify right side
    84,018.44x = 2,626,187,551.93
  5. Step 5: Solve for x
    x = 2,626,187,551.93/84,018.44
  6. Step 6: Final answer
    x = 31,257.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.