Home / 20,907.74-28,852.76-11,347.63

Finding the Fourth Proportional to 20,907.74, 28,852.76 and 11,347.63

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Solution

The fourth proportional to 20,907.74, 28,852.76 and 11,347.63 is: 15,659.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.74 : 28,852.76 = 11,347.63 : x
  2. Step 2: Convert to fraction form
    20,907.74/28,852.76 = 11,347.63/x
  3. Step 3: Cross multiply
    20,907.74x = 28,852.76 × 11,347.63
  4. Step 4: Simplify right side
    20,907.74x = 327,410,401.20
  5. Step 5: Solve for x
    x = 327,410,401.20/20,907.74
  6. Step 6: Final answer
    x = 15,659.77

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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.