Home / 28,866.80-43,289.40-10,139.60

Finding the Fourth Proportional to 28,866.80, 43,289.40 and 10,139.60

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Solution

The fourth proportional to 28,866.80, 43,289.40 and 10,139.60 is: 15,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.80 : 43,289.40 = 10,139.60 : x
  2. Step 2: Convert to fraction form
    28,866.80/43,289.40 = 10,139.60/x
  3. Step 3: Cross multiply
    28,866.80x = 43,289.40 × 10,139.60
  4. Step 4: Simplify right side
    28,866.80x = 438,937,200.24
  5. Step 5: Solve for x
    x = 438,937,200.24/28,866.80
  6. Step 6: Final answer
    x = 15,205.61

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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.