Home / 12,943.60-19,386.24-7,738.60

Finding the Fourth Proportional to 12,943.60, 19,386.24 and 7,738.60

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Solution

The fourth proportional to 12,943.60, 19,386.24 and 7,738.60 is: 11,590.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.60 : 19,386.24 = 7,738.60 : x
  2. Step 2: Convert to fraction form
    12,943.60/19,386.24 = 7,738.60/x
  3. Step 3: Cross multiply
    12,943.60x = 19,386.24 × 7,738.60
  4. Step 4: Simplify right side
    12,943.60x = 150,022,356.86
  5. Step 5: Solve for x
    x = 150,022,356.86/12,943.60
  6. Step 6: Final answer
    x = 11,590.47

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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.