Home / 12,728.58-19,085.64-5,230.08

Finding the Fourth Proportional to 12,728.58, 19,085.64 and 5,230.08

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Solution

The fourth proportional to 12,728.58, 19,085.64 and 5,230.08 is: 7,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.58 : 19,085.64 = 5,230.08 : x
  2. Step 2: Convert to fraction form
    12,728.58/19,085.64 = 5,230.08/x
  3. Step 3: Cross multiply
    12,728.58x = 19,085.64 × 5,230.08
  4. Step 4: Simplify right side
    12,728.58x = 99,819,424.05
  5. Step 5: Solve for x
    x = 99,819,424.05/12,728.58
  6. Step 6: Final answer
    x = 7,842.15

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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.