Home / 38,899.07-53,671.23-21,900

Finding the Fourth Proportional to 38,899.07, 53,671.23 and 21,900

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Solution

The fourth proportional to 38,899.07, 53,671.23 and 21,900 is: 30,216.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,899.07 : 53,671.23 = 21,900 : x
  2. Step 2: Convert to fraction form
    38,899.07/53,671.23 = 21,900/x
  3. Step 3: Cross multiply
    38,899.07x = 53,671.23 × 21,900
  4. Step 4: Simplify right side
    38,899.07x = 1,175,399,937
  5. Step 5: Solve for x
    x = 1,175,399,937/38,899.07
  6. Step 6: Final answer
    x = 30,216.66

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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.