Home / 39,680.99-54,759.61-21,776.29

Finding the Fourth Proportional to 39,680.99, 54,759.61 and 21,776.29

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Solution

The fourth proportional to 39,680.99, 54,759.61 and 21,776.29 is: 30,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.99 : 54,759.61 = 21,776.29 : x
  2. Step 2: Convert to fraction form
    39,680.99/54,759.61 = 21,776.29/x
  3. Step 3: Cross multiply
    39,680.99x = 54,759.61 × 21,776.29
  4. Step 4: Simplify right side
    39,680.99x = 1,192,461,345.99
  5. Step 5: Solve for x
    x = 1,192,461,345.99/39,680.99
  6. Step 6: Final answer
    x = 30,051.20

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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.