Home / 28,751.40-43,128.45-9,030.60

Finding the Fourth Proportional to 28,751.40, 43,128.45 and 9,030.60

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Solution

The fourth proportional to 28,751.40, 43,128.45 and 9,030.60 is: 13,546.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.40 : 43,128.45 = 9,030.60 : x
  2. Step 2: Convert to fraction form
    28,751.40/43,128.45 = 9,030.60/x
  3. Step 3: Cross multiply
    28,751.40x = 43,128.45 × 9,030.60
  4. Step 4: Simplify right side
    28,751.40x = 389,475,780.57
  5. Step 5: Solve for x
    x = 389,475,780.57/28,751.40
  6. Step 6: Final answer
    x = 13,546.32

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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.