Home / 20,927.24-28,869.72-13,369.64

Finding the Fourth Proportional to 20,927.24, 28,869.72 and 13,369.64

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Solution

The fourth proportional to 20,927.24, 28,869.72 and 13,369.64 is: 18,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.24 : 28,869.72 = 13,369.64 : x
  2. Step 2: Convert to fraction form
    20,927.24/28,869.72 = 13,369.64/x
  3. Step 3: Cross multiply
    20,927.24x = 28,869.72 × 13,369.64
  4. Step 4: Simplify right side
    20,927.24x = 385,977,763.30
  5. Step 5: Solve for x
    x = 385,977,763.30/20,927.24
  6. Step 6: Final answer
    x = 18,443.80

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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.