Home / 9,899.64-13,661.16-5,919.84

Finding the Fourth Proportional to 9,899.64, 13,661.16 and 5,919.84

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Solution

The fourth proportional to 9,899.64, 13,661.16 and 5,919.84 is: 8,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.64 : 13,661.16 = 5,919.84 : x
  2. Step 2: Convert to fraction form
    9,899.64/13,661.16 = 5,919.84/x
  3. Step 3: Cross multiply
    9,899.64x = 13,661.16 × 5,919.84
  4. Step 4: Simplify right side
    9,899.64x = 80,871,881.41
  5. Step 5: Solve for x
    x = 80,871,881.41/9,899.64
  6. Step 6: Final answer
    x = 8,169.17

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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.