Home / 39,417.35-54,395.48-21,512.21

Finding the Fourth Proportional to 39,417.35, 54,395.48 and 21,512.21

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Solution

The fourth proportional to 39,417.35, 54,395.48 and 21,512.21 is: 29,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.35 : 54,395.48 = 21,512.21 : x
  2. Step 2: Convert to fraction form
    39,417.35/54,395.48 = 21,512.21/x
  3. Step 3: Cross multiply
    39,417.35x = 54,395.48 × 21,512.21
  4. Step 4: Simplify right side
    39,417.35x = 1,170,166,609.27
  5. Step 5: Solve for x
    x = 1,170,166,609.27/39,417.35
  6. Step 6: Final answer
    x = 29,686.59

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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.