Home / 28,907.14-43,360.56-9,187.20

Finding the Fourth Proportional to 28,907.14, 43,360.56 and 9,187.20

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Solution

The fourth proportional to 28,907.14, 43,360.56 and 9,187.20 is: 13,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.14 : 43,360.56 = 9,187.20 : x
  2. Step 2: Convert to fraction form
    28,907.14/43,360.56 = 9,187.20/x
  3. Step 3: Cross multiply
    28,907.14x = 43,360.56 × 9,187.20
  4. Step 4: Simplify right side
    28,907.14x = 398,362,136.83
  5. Step 5: Solve for x
    x = 398,362,136.83/28,907.14
  6. Step 6: Final answer
    x = 13,780.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.