Home / 20,322.45-28,045.43-11,369.85

Finding the Fourth Proportional to 20,322.45, 28,045.43 and 11,369.85

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Solution

The fourth proportional to 20,322.45, 28,045.43 and 11,369.85 is: 15,690.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.45 : 28,045.43 = 11,369.85 : x
  2. Step 2: Convert to fraction form
    20,322.45/28,045.43 = 11,369.85/x
  3. Step 3: Cross multiply
    20,322.45x = 28,045.43 × 11,369.85
  4. Step 4: Simplify right side
    20,322.45x = 318,872,275.44
  5. Step 5: Solve for x
    x = 318,872,275.44/20,322.45
  6. Step 6: Final answer
    x = 15,690.64

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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.