Home / 39,535.79-54,560.69-21,630.80

Finding the Fourth Proportional to 39,535.79, 54,560.69 and 21,630.80

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Solution

The fourth proportional to 39,535.79, 54,560.69 and 21,630.80 is: 29,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,535.79 : 54,560.69 = 21,630.80 : x
  2. Step 2: Convert to fraction form
    39,535.79/54,560.69 = 21,630.80/x
  3. Step 3: Cross multiply
    39,535.79x = 54,560.69 × 21,630.80
  4. Step 4: Simplify right side
    39,535.79x = 1,180,190,992.29
  5. Step 5: Solve for x
    x = 1,180,190,992.29/39,535.79
  6. Step 6: Final answer
    x = 29,851.21

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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.