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Finding the Fourth Proportional to 18,695.28, 28,050.48 and 7,009.68

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Solution

The fourth proportional to 18,695.28, 28,050.48 and 7,009.68 is: 10,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.28 : 28,050.48 = 7,009.68 : x
  2. Step 2: Convert to fraction form
    18,695.28/28,050.48 = 7,009.68/x
  3. Step 3: Cross multiply
    18,695.28x = 28,050.48 × 7,009.68
  4. Step 4: Simplify right side
    18,695.28x = 196,624,888.65
  5. Step 5: Solve for x
    x = 196,624,888.65/18,695.28
  6. Step 6: Final answer
    x = 10,517.35

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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.