Home / 19,647.90-27,112.32-11,688.84

Finding the Fourth Proportional to 19,647.90, 27,112.32 and 11,688.84

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Solution

The fourth proportional to 19,647.90, 27,112.32 and 11,688.84 is: 16,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.90 : 27,112.32 = 11,688.84 : x
  2. Step 2: Convert to fraction form
    19,647.90/27,112.32 = 11,688.84/x
  3. Step 3: Cross multiply
    19,647.90x = 27,112.32 × 11,688.84
  4. Step 4: Simplify right side
    19,647.90x = 316,911,570.51
  5. Step 5: Solve for x
    x = 316,911,570.51/19,647.90
  6. Step 6: Final answer
    x = 16,129.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.