Home / 39,021.58-53,849.37-21,116.20

Finding the Fourth Proportional to 39,021.58, 53,849.37 and 21,116.20

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Solution

The fourth proportional to 39,021.58, 53,849.37 and 21,116.20 is: 29,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021.58 : 53,849.37 = 21,116.20 : x
  2. Step 2: Convert to fraction form
    39,021.58/53,849.37 = 21,116.20/x
  3. Step 3: Cross multiply
    39,021.58x = 53,849.37 × 21,116.20
  4. Step 4: Simplify right side
    39,021.58x = 1,137,094,066.79
  5. Step 5: Solve for x
    x = 1,137,094,066.79/39,021.58
  6. Step 6: Final answer
    x = 29,140.13

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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.