Home / 39,810.76-54,937.47-21,904.09

Finding the Fourth Proportional to 39,810.76, 54,937.47 and 21,904.09

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Solution

The fourth proportional to 39,810.76, 54,937.47 and 21,904.09 is: 30,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,810.76 : 54,937.47 = 21,904.09 : x
  2. Step 2: Convert to fraction form
    39,810.76/54,937.47 = 21,904.09/x
  3. Step 3: Cross multiply
    39,810.76x = 54,937.47 × 21,904.09
  4. Step 4: Simplify right side
    39,810.76x = 1,203,355,149.91
  5. Step 5: Solve for x
    x = 1,203,355,149.91/39,810.76
  6. Step 6: Final answer
    x = 30,226.88

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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.