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Finding the Fourth Proportional to 19,547.23, 26,978.79 and 11,163.73

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Solution

The fourth proportional to 19,547.23, 26,978.79 and 11,163.73 is: 15,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,547.23 : 26,978.79 = 11,163.73 : x
  2. Step 2: Convert to fraction form
    19,547.23/26,978.79 = 11,163.73/x
  3. Step 3: Cross multiply
    19,547.23x = 26,978.79 × 11,163.73
  4. Step 4: Simplify right side
    19,547.23x = 301,183,927.29
  5. Step 5: Solve for x
    x = 301,183,927.29/19,547.23
  6. Step 6: Final answer
    x = 15,408.01

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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.