Home / 13,989.28-19,303.64-8,019.32

Finding the Fourth Proportional to 13,989.28, 19,303.64 and 8,019.32

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Solution

The fourth proportional to 13,989.28, 19,303.64 and 8,019.32 is: 11,065.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.28 : 19,303.64 = 8,019.32 : x
  2. Step 2: Convert to fraction form
    13,989.28/19,303.64 = 8,019.32/x
  3. Step 3: Cross multiply
    13,989.28x = 19,303.64 × 8,019.32
  4. Step 4: Simplify right side
    13,989.28x = 154,802,066.32
  5. Step 5: Solve for x
    x = 154,802,066.32/13,989.28
  6. Step 6: Final answer
    x = 11,065.76

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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.