Home / 39,723.99-54,820.08-21,820.65

Finding the Fourth Proportional to 39,723.99, 54,820.08 and 21,820.65

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Solution

The fourth proportional to 39,723.99, 54,820.08 and 21,820.65 is: 30,113.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.99 : 54,820.08 = 21,820.65 : x
  2. Step 2: Convert to fraction form
    39,723.99/54,820.08 = 21,820.65/x
  3. Step 3: Cross multiply
    39,723.99x = 54,820.08 × 21,820.65
  4. Step 4: Simplify right side
    39,723.99x = 1,196,209,778.65
  5. Step 5: Solve for x
    x = 1,196,209,778.65/39,723.99
  6. Step 6: Final answer
    x = 30,113.03

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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.