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Finding the Fourth Proportional to 12,795.66, 17,663.94 and 9,021.90

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Solution

The fourth proportional to 12,795.66, 17,663.94 and 9,021.90 is: 12,454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.66 : 17,663.94 = 9,021.90 : x
  2. Step 2: Convert to fraction form
    12,795.66/17,663.94 = 9,021.90/x
  3. Step 3: Cross multiply
    12,795.66x = 17,663.94 × 9,021.90
  4. Step 4: Simplify right side
    12,795.66x = 159,362,300.29
  5. Step 5: Solve for x
    x = 159,362,300.29/12,795.66
  6. Step 6: Final answer
    x = 12,454.40

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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.