Home / 39,308.72-54,246.09-21,403.80

Finding the Fourth Proportional to 39,308.72, 54,246.09 and 21,403.80

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Solution

The fourth proportional to 39,308.72, 54,246.09 and 21,403.80 is: 29,537.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.72 : 54,246.09 = 21,403.80 : x
  2. Step 2: Convert to fraction form
    39,308.72/54,246.09 = 21,403.80/x
  3. Step 3: Cross multiply
    39,308.72x = 54,246.09 × 21,403.80
  4. Step 4: Simplify right side
    39,308.72x = 1,161,072,461.14
  5. Step 5: Solve for x
    x = 1,161,072,461.14/39,308.72
  6. Step 6: Final answer
    x = 29,537.28

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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.