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Finding the Fourth Proportional to 12,798.51, 17,661.32 and 7,133.87

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Solution

The fourth proportional to 12,798.51, 17,661.32 and 7,133.87 is: 9,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.51 : 17,661.32 = 7,133.87 : x
  2. Step 2: Convert to fraction form
    12,798.51/17,661.32 = 7,133.87/x
  3. Step 3: Cross multiply
    12,798.51x = 17,661.32 × 7,133.87
  4. Step 4: Simplify right side
    12,798.51x = 125,993,576.08
  5. Step 5: Solve for x
    x = 125,993,576.08/12,798.51
  6. Step 6: Final answer
    x = 9,844.40

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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.