Home / 39,288.39-54,219.13-21,384.55

Finding the Fourth Proportional to 39,288.39, 54,219.13 and 21,384.55

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Solution

The fourth proportional to 39,288.39, 54,219.13 and 21,384.55 is: 29,511.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.39 : 54,219.13 = 21,384.55 : x
  2. Step 2: Convert to fraction form
    39,288.39/54,219.13 = 21,384.55/x
  3. Step 3: Cross multiply
    39,288.39x = 54,219.13 × 21,384.55
  4. Step 4: Simplify right side
    39,288.39x = 1,159,451,696.44
  5. Step 5: Solve for x
    x = 1,159,451,696.44/39,288.39
  6. Step 6: Final answer
    x = 29,511.31

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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.