Home / 28,220.76-38,966.94-22,907.16

Finding the Fourth Proportional to 28,220.76, 38,966.94 and 22,907.16

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Solution

The fourth proportional to 28,220.76, 38,966.94 and 22,907.16 is: 31,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.76 : 38,966.94 = 22,907.16 : x
  2. Step 2: Convert to fraction form
    28,220.76/38,966.94 = 22,907.16/x
  3. Step 3: Cross multiply
    28,220.76x = 38,966.94 × 22,907.16
  4. Step 4: Simplify right side
    28,220.76x = 892,621,929.29
  5. Step 5: Solve for x
    x = 892,621,929.29/28,220.76
  6. Step 6: Final answer
    x = 31,629.97

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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.