Home / 39,384.84-54,349.44-21,479.52

Finding the Fourth Proportional to 39,384.84, 54,349.44 and 21,479.52

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Solution

The fourth proportional to 39,384.84, 54,349.44 and 21,479.52 is: 29,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.84 : 54,349.44 = 21,479.52 : x
  2. Step 2: Convert to fraction form
    39,384.84/54,349.44 = 21,479.52/x
  3. Step 3: Cross multiply
    39,384.84x = 54,349.44 × 21,479.52
  4. Step 4: Simplify right side
    39,384.84x = 1,167,399,883.47
  5. Step 5: Solve for x
    x = 1,167,399,883.47/39,384.84
  6. Step 6: Final answer
    x = 29,640.84

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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.