Home / 12,665.13-18,997.70-5,643.33

Finding the Fourth Proportional to 12,665.13, 18,997.70 and 5,643.33

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Solution

The fourth proportional to 12,665.13, 18,997.70 and 5,643.33 is: 8,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.13 : 18,997.70 = 5,643.33 : x
  2. Step 2: Convert to fraction form
    12,665.13/18,997.70 = 5,643.33/x
  3. Step 3: Cross multiply
    12,665.13x = 18,997.70 × 5,643.33
  4. Step 4: Simplify right side
    12,665.13x = 107,210,262.12
  5. Step 5: Solve for x
    x = 107,210,262.12/12,665.13
  6. Step 6: Final answer
    x = 8,465.00

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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.