Home / 28,175.87-42,260.45-7,400.99

Finding the Fourth Proportional to 28,175.87, 42,260.45 and 7,400.99

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Solution

The fourth proportional to 28,175.87, 42,260.45 and 7,400.99 is: 11,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.87 : 42,260.45 = 7,400.99 : x
  2. Step 2: Convert to fraction form
    28,175.87/42,260.45 = 7,400.99/x
  3. Step 3: Cross multiply
    28,175.87x = 42,260.45 × 7,400.99
  4. Step 4: Simplify right side
    28,175.87x = 312,769,130.84
  5. Step 5: Solve for x
    x = 312,769,130.84/28,175.87
  6. Step 6: Final answer
    x = 11,100.60

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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.