Home / 39,021.48-53,849.64-21,116.49

Finding the Fourth Proportional to 39,021.48, 53,849.64 and 21,116.49

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Solution

The fourth proportional to 39,021.48, 53,849.64 and 21,116.49 is: 29,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021.48 : 53,849.64 = 21,116.49 : x
  2. Step 2: Convert to fraction form
    39,021.48/53,849.64 = 21,116.49/x
  3. Step 3: Cross multiply
    39,021.48x = 53,849.64 × 21,116.49
  4. Step 4: Simplify right side
    39,021.48x = 1,137,115,261.81
  5. Step 5: Solve for x
    x = 1,137,115,261.81/39,021.48
  6. Step 6: Final answer
    x = 29,140.75

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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.