Home / 28,551.73-39,400.15-15,804.16

Finding the Fourth Proportional to 28,551.73, 39,400.15 and 15,804.16

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Solution

The fourth proportional to 28,551.73, 39,400.15 and 15,804.16 is: 21,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.73 : 39,400.15 = 15,804.16 : x
  2. Step 2: Convert to fraction form
    28,551.73/39,400.15 = 15,804.16/x
  3. Step 3: Cross multiply
    28,551.73x = 39,400.15 × 15,804.16
  4. Step 4: Simplify right side
    28,551.73x = 622,686,274.62
  5. Step 5: Solve for x
    x = 622,686,274.62/28,551.73
  6. Step 6: Final answer
    x = 21,809.06

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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.