Home / 39,218.52-54,120.85-21,313.59

Finding the Fourth Proportional to 39,218.52, 54,120.85 and 21,313.59

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Solution

The fourth proportional to 39,218.52, 54,120.85 and 21,313.59 is: 29,412.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.52 : 54,120.85 = 21,313.59 : x
  2. Step 2: Convert to fraction form
    39,218.52/54,120.85 = 21,313.59/x
  3. Step 3: Cross multiply
    39,218.52x = 54,120.85 × 21,313.59
  4. Step 4: Simplify right side
    39,218.52x = 1,153,509,607.35
  5. Step 5: Solve for x
    x = 1,153,509,607.35/39,218.52
  6. Step 6: Final answer
    x = 29,412.37

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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.