Home / 20,873.19-28,809.36-19,191.95

Finding the Fourth Proportional to 20,873.19, 28,809.36 and 19,191.95

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Solution

The fourth proportional to 20,873.19, 28,809.36 and 19,191.95 is: 26,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.19 : 28,809.36 = 19,191.95 : x
  2. Step 2: Convert to fraction form
    20,873.19/28,809.36 = 19,191.95/x
  3. Step 3: Cross multiply
    20,873.19x = 28,809.36 × 19,191.95
  4. Step 4: Simplify right side
    20,873.19x = 552,907,652.61
  5. Step 5: Solve for x
    x = 552,907,652.61/20,873.19
  6. Step 6: Final answer
    x = 26,488.89

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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.