Home / 28,907.20-43,360.80-17,826.40

Finding the Fourth Proportional to 28,907.20, 43,360.80 and 17,826.40

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Solution

The fourth proportional to 28,907.20, 43,360.80 and 17,826.40 is: 26,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.20 : 43,360.80 = 17,826.40 : x
  2. Step 2: Convert to fraction form
    28,907.20/43,360.80 = 17,826.40/x
  3. Step 3: Cross multiply
    28,907.20x = 43,360.80 × 17,826.40
  4. Step 4: Simplify right side
    28,907.20x = 772,966,965.12
  5. Step 5: Solve for x
    x = 772,966,965.12/28,907.20
  6. Step 6: Final answer
    x = 26,739.60

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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.