Home / 20,898.95-28,840.55-11,467.71

Finding the Fourth Proportional to 20,898.95, 28,840.55 and 11,467.71

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Solution

The fourth proportional to 20,898.95, 28,840.55 and 11,467.71 is: 15,825.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.95 : 28,840.55 = 11,467.71 : x
  2. Step 2: Convert to fraction form
    20,898.95/28,840.55 = 11,467.71/x
  3. Step 3: Cross multiply
    20,898.95x = 28,840.55 × 11,467.71
  4. Step 4: Simplify right side
    20,898.95x = 330,735,006.30
  5. Step 5: Solve for x
    x = 330,735,006.30/20,898.95
  6. Step 6: Final answer
    x = 15,825.44

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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.