Home / 28,430.20-42,645.26-7,653.72

Finding the Fourth Proportional to 28,430.20, 42,645.26 and 7,653.72

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Solution

The fourth proportional to 28,430.20, 42,645.26 and 7,653.72 is: 11,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.20 : 42,645.26 = 7,653.72 : x
  2. Step 2: Convert to fraction form
    28,430.20/42,645.26 = 7,653.72/x
  3. Step 3: Cross multiply
    28,430.20x = 42,645.26 × 7,653.72
  4. Step 4: Simplify right side
    28,430.20x = 326,394,879.37
  5. Step 5: Solve for x
    x = 326,394,879.37/28,430.20
  6. Step 6: Final answer
    x = 11,480.57

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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.