Home / 20,911.95-28,805.22-19,534.14

Finding the Fourth Proportional to 20,911.95, 28,805.22 and 19,534.14

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Solution

The fourth proportional to 20,911.95, 28,805.22 and 19,534.14 is: 26,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.95 : 28,805.22 = 19,534.14 : x
  2. Step 2: Convert to fraction form
    20,911.95/28,805.22 = 19,534.14/x
  3. Step 3: Cross multiply
    20,911.95x = 28,805.22 × 19,534.14
  4. Step 4: Simplify right side
    20,911.95x = 562,685,200.21
  5. Step 5: Solve for x
    x = 562,685,200.21/20,911.95
  6. Step 6: Final answer
    x = 26,907.35

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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.