Home / 9,709.79-13,391.24-8,204.70

Finding the Fourth Proportional to 9,709.79, 13,391.24 and 8,204.70

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Solution

The fourth proportional to 9,709.79, 13,391.24 and 8,204.70 is: 11,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.79 : 13,391.24 = 8,204.70 : x
  2. Step 2: Convert to fraction form
    9,709.79/13,391.24 = 8,204.70/x
  3. Step 3: Cross multiply
    9,709.79x = 13,391.24 × 8,204.70
  4. Step 4: Simplify right side
    9,709.79x = 109,871,065.80
  5. Step 5: Solve for x
    x = 109,871,065.80/9,709.79
  6. Step 6: Final answer
    x = 11,315.50

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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.