Home / 28,181.94-42,280.20-10,651.92

Finding the Fourth Proportional to 28,181.94, 42,280.20 and 10,651.92

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Solution

The fourth proportional to 28,181.94, 42,280.20 and 10,651.92 is: 15,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.94 : 42,280.20 = 10,651.92 : x
  2. Step 2: Convert to fraction form
    28,181.94/42,280.20 = 10,651.92/x
  3. Step 3: Cross multiply
    28,181.94x = 42,280.20 × 10,651.92
  4. Step 4: Simplify right side
    28,181.94x = 450,365,307.98
  5. Step 5: Solve for x
    x = 450,365,307.98/28,181.94
  6. Step 6: Final answer
    x = 15,980.64

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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.