Home / 19,390.86-26,756.48-10,891.36

Finding the Fourth Proportional to 19,390.86, 26,756.48 and 10,891.36

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Solution

The fourth proportional to 19,390.86, 26,756.48 and 10,891.36 is: 15,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.86 : 26,756.48 = 10,891.36 : x
  2. Step 2: Convert to fraction form
    19,390.86/26,756.48 = 10,891.36/x
  3. Step 3: Cross multiply
    19,390.86x = 26,756.48 × 10,891.36
  4. Step 4: Simplify right side
    19,390.86x = 291,414,267.77
  5. Step 5: Solve for x
    x = 291,414,267.77/19,390.86
  6. Step 6: Final answer
    x = 15,028.43

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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.