Home / 84,390.94-126,586.61-21,211.21

Finding the Fourth Proportional to 84,390.94, 126,586.61 and 21,211.21

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Solution

The fourth proportional to 84,390.94, 126,586.61 and 21,211.21 is: 31,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,390.94 : 126,586.61 = 21,211.21 : x
  2. Step 2: Convert to fraction form
    84,390.94/126,586.61 = 21,211.21/x
  3. Step 3: Cross multiply
    84,390.94x = 126,586.61 × 21,211.21
  4. Step 4: Simplify right side
    84,390.94x = 2,685,055,167.90
  5. Step 5: Solve for x
    x = 2,685,055,167.90/84,390.94
  6. Step 6: Final answer
    x = 31,816.87

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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.