Home / 12,918.08-19,356.96-10,320.32

Finding the Fourth Proportional to 12,918.08, 19,356.96 and 10,320.32

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Solution

The fourth proportional to 12,918.08, 19,356.96 and 10,320.32 is: 15,464.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.08 : 19,356.96 = 10,320.32 : x
  2. Step 2: Convert to fraction form
    12,918.08/19,356.96 = 10,320.32/x
  3. Step 3: Cross multiply
    12,918.08x = 19,356.96 × 10,320.32
  4. Step 4: Simplify right side
    12,918.08x = 199,770,021.43
  5. Step 5: Solve for x
    x = 199,770,021.43/12,918.08
  6. Step 6: Final answer
    x = 15,464.37

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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.