Home / 9,628.39-13,245.55-7,856.11

Finding the Fourth Proportional to 9,628.39, 13,245.55 and 7,856.11

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Solution

The fourth proportional to 9,628.39, 13,245.55 and 7,856.11 is: 10,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,628.39 : 13,245.55 = 7,856.11 : x
  2. Step 2: Convert to fraction form
    9,628.39/13,245.55 = 7,856.11/x
  3. Step 3: Cross multiply
    9,628.39x = 13,245.55 × 7,856.11
  4. Step 4: Simplify right side
    9,628.39x = 104,058,497.81
  5. Step 5: Solve for x
    x = 104,058,497.81/9,628.39
  6. Step 6: Final answer
    x = 10,807.47

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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.