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Finding the Fourth Proportional to 38,483.95, 53,107.35 and 21,488.48

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Solution

The fourth proportional to 38,483.95, 53,107.35 and 21,488.48 is: 29,653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,483.95 : 53,107.35 = 21,488.48 : x
  2. Step 2: Convert to fraction form
    38,483.95/53,107.35 = 21,488.48/x
  3. Step 3: Cross multiply
    38,483.95x = 53,107.35 × 21,488.48
  4. Step 4: Simplify right side
    38,483.95x = 1,141,196,228.33
  5. Step 5: Solve for x
    x = 1,141,196,228.33/38,483.95
  6. Step 6: Final answer
    x = 29,653.82

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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.