Home / 39,434.57-54,420.53-21,530.33

Finding the Fourth Proportional to 39,434.57, 54,420.53 and 21,530.33

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Solution

The fourth proportional to 39,434.57, 54,420.53 and 21,530.33 is: 29,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,434.57 : 54,420.53 = 21,530.33 : x
  2. Step 2: Convert to fraction form
    39,434.57/54,420.53 = 21,530.33/x
  3. Step 3: Cross multiply
    39,434.57x = 54,420.53 × 21,530.33
  4. Step 4: Simplify right side
    39,434.57x = 1,171,691,969.67
  5. Step 5: Solve for x
    x = 1,171,691,969.67/39,434.57
  6. Step 6: Final answer
    x = 29,712.30

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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.