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Finding the Fourth Proportional to 39,491.46, 54,498.08 and 21,586.46

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Solution

The fourth proportional to 39,491.46, 54,498.08 and 21,586.46 is: 29,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,491.46 : 54,498.08 = 21,586.46 : x
  2. Step 2: Convert to fraction form
    39,491.46/54,498.08 = 21,586.46/x
  3. Step 3: Cross multiply
    39,491.46x = 54,498.08 × 21,586.46
  4. Step 4: Simplify right side
    39,491.46x = 1,176,420,405.47
  5. Step 5: Solve for x
    x = 1,176,420,405.47/39,491.46
  6. Step 6: Final answer
    x = 29,789.24

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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.