Home / 19,406.12-26,781.30-11,345.13

Finding the Fourth Proportional to 19,406.12, 26,781.30 and 11,345.13

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Solution

The fourth proportional to 19,406.12, 26,781.30 and 11,345.13 is: 15,656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.12 : 26,781.30 = 11,345.13 : x
  2. Step 2: Convert to fraction form
    19,406.12/26,781.30 = 11,345.13/x
  3. Step 3: Cross multiply
    19,406.12x = 26,781.30 × 11,345.13
  4. Step 4: Simplify right side
    19,406.12x = 303,837,330.07
  5. Step 5: Solve for x
    x = 303,837,330.07/19,406.12
  6. Step 6: Final answer
    x = 15,656.78

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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.