Home / 39,158.43-54,038.31-21,253.44

Finding the Fourth Proportional to 39,158.43, 54,038.31 and 21,253.44

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Solution

The fourth proportional to 39,158.43, 54,038.31 and 21,253.44 is: 29,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.43 : 54,038.31 = 21,253.44 : x
  2. Step 2: Convert to fraction form
    39,158.43/54,038.31 = 21,253.44/x
  3. Step 3: Cross multiply
    39,158.43x = 54,038.31 × 21,253.44
  4. Step 4: Simplify right side
    39,158.43x = 1,148,499,979.29
  5. Step 5: Solve for x
    x = 1,148,499,979.29/39,158.43
  6. Step 6: Final answer
    x = 29,329.57

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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.