Home / 28,458.86-42,690.36-10,928.69

Finding the Fourth Proportional to 28,458.86, 42,690.36 and 10,928.69

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Solution

The fourth proportional to 28,458.86, 42,690.36 and 10,928.69 is: 16,393.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.86 : 42,690.36 = 10,928.69 : x
  2. Step 2: Convert to fraction form
    28,458.86/42,690.36 = 10,928.69/x
  3. Step 3: Cross multiply
    28,458.86x = 42,690.36 × 10,928.69
  4. Step 4: Simplify right side
    28,458.86x = 466,549,496.98
  5. Step 5: Solve for x
    x = 466,549,496.98/28,458.86
  6. Step 6: Final answer
    x = 16,393.83

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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.