Home / 39,443.15-54,430.79-21,537.70

Finding the Fourth Proportional to 39,443.15, 54,430.79 and 21,537.70

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Solution

The fourth proportional to 39,443.15, 54,430.79 and 21,537.70 is: 29,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.15 : 54,430.79 = 21,537.70 : x
  2. Step 2: Convert to fraction form
    39,443.15/54,430.79 = 21,537.70/x
  3. Step 3: Cross multiply
    39,443.15x = 54,430.79 × 21,537.70
  4. Step 4: Simplify right side
    39,443.15x = 1,172,313,782.02
  5. Step 5: Solve for x
    x = 1,172,313,782.02/39,443.15
  6. Step 6: Final answer
    x = 29,721.60

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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.