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Finding the Fourth Proportional to 19,369.92, 26,728.64 and 10,870.08

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Solution

The fourth proportional to 19,369.92, 26,728.64 and 10,870.08 is: 14,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.92 : 26,728.64 = 10,870.08 : x
  2. Step 2: Convert to fraction form
    19,369.92/26,728.64 = 10,870.08/x
  3. Step 3: Cross multiply
    19,369.92x = 26,728.64 × 10,870.08
  4. Step 4: Simplify right side
    19,369.92x = 290,542,455.09
  5. Step 5: Solve for x
    x = 290,542,455.09/19,369.92
  6. Step 6: Final answer
    x = 14,999.67

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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.