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Finding the Fourth Proportional to 12,661.56, 18,995.58 and 4,868.28

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Solution

The fourth proportional to 12,661.56, 18,995.58 and 4,868.28 is: 7,303.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.56 : 18,995.58 = 4,868.28 : x
  2. Step 2: Convert to fraction form
    12,661.56/18,995.58 = 4,868.28/x
  3. Step 3: Cross multiply
    12,661.56x = 18,995.58 × 4,868.28
  4. Step 4: Simplify right side
    12,661.56x = 92,475,802.20
  5. Step 5: Solve for x
    x = 92,475,802.20/12,661.56
  6. Step 6: Final answer
    x = 7,303.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.