Home / 39,769.99-54,882.78-21,866.16

Finding the Fourth Proportional to 39,769.99, 54,882.78 and 21,866.16

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Solution

The fourth proportional to 39,769.99, 54,882.78 and 21,866.16 is: 30,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.99 : 54,882.78 = 21,866.16 : x
  2. Step 2: Convert to fraction form
    39,769.99/54,882.78 = 21,866.16/x
  3. Step 3: Cross multiply
    39,769.99x = 54,882.78 × 21,866.16
  4. Step 4: Simplify right side
    39,769.99x = 1,200,075,360.92
  5. Step 5: Solve for x
    x = 1,200,075,360.92/39,769.99
  6. Step 6: Final answer
    x = 30,175.40

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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.