Home / 20,658.48-28,509.24-12,161.04

Finding the Fourth Proportional to 20,658.48, 28,509.24 and 12,161.04

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Solution

The fourth proportional to 20,658.48, 28,509.24 and 12,161.04 is: 16,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.48 : 28,509.24 = 12,161.04 : x
  2. Step 2: Convert to fraction form
    20,658.48/28,509.24 = 12,161.04/x
  3. Step 3: Cross multiply
    20,658.48x = 28,509.24 × 12,161.04
  4. Step 4: Simplify right side
    20,658.48x = 346,702,008.01
  5. Step 5: Solve for x
    x = 346,702,008.01/20,658.48
  6. Step 6: Final answer
    x = 16,782.55

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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.