Home / 20,907.28-28,851.95-11,347.21

Finding the Fourth Proportional to 20,907.28, 28,851.95 and 11,347.21

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Solution

The fourth proportional to 20,907.28, 28,851.95 and 11,347.21 is: 15,659.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.28 : 28,851.95 = 11,347.21 : x
  2. Step 2: Convert to fraction form
    20,907.28/28,851.95 = 11,347.21/x
  3. Step 3: Cross multiply
    20,907.28x = 28,851.95 × 11,347.21
  4. Step 4: Simplify right side
    20,907.28x = 327,388,934.56
  5. Step 5: Solve for x
    x = 327,388,934.56/20,907.28
  6. Step 6: Final answer
    x = 15,659.09

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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.