Home / 38,483.78-53,107.07-21,488.29

Finding the Fourth Proportional to 38,483.78, 53,107.07 and 21,488.29

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Solution

The fourth proportional to 38,483.78, 53,107.07 and 21,488.29 is: 29,653.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,483.78 : 53,107.07 = 21,488.29 : x
  2. Step 2: Convert to fraction form
    38,483.78/53,107.07 = 21,488.29/x
  3. Step 3: Cross multiply
    38,483.78x = 53,107.07 × 21,488.29
  4. Step 4: Simplify right side
    38,483.78x = 1,141,179,881.00
  5. Step 5: Solve for x
    x = 1,141,179,881.00/38,483.78
  6. Step 6: Final answer
    x = 29,653.53

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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.