Home / 12,693.45-19,012.41-6,442.68

Finding the Fourth Proportional to 12,693.45, 19,012.41 and 6,442.68

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Solution

The fourth proportional to 12,693.45, 19,012.41 and 6,442.68 is: 9,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.45 : 19,012.41 = 6,442.68 : x
  2. Step 2: Convert to fraction form
    12,693.45/19,012.41 = 6,442.68/x
  3. Step 3: Cross multiply
    12,693.45x = 19,012.41 × 6,442.68
  4. Step 4: Simplify right side
    12,693.45x = 122,490,873.66
  5. Step 5: Solve for x
    x = 122,490,873.66/12,693.45
  6. Step 6: Final answer
    x = 9,649.93

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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.