Home / 28,216.11-38,938.68-16,886.09

Finding the Fourth Proportional to 28,216.11, 38,938.68 and 16,886.09

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Solution

The fourth proportional to 28,216.11, 38,938.68 and 16,886.09 is: 23,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.11 : 38,938.68 = 16,886.09 : x
  2. Step 2: Convert to fraction form
    28,216.11/38,938.68 = 16,886.09/x
  3. Step 3: Cross multiply
    28,216.11x = 38,938.68 × 16,886.09
  4. Step 4: Simplify right side
    28,216.11x = 657,522,054.96
  5. Step 5: Solve for x
    x = 657,522,054.96/28,216.11
  6. Step 6: Final answer
    x = 23,303.07

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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.