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Finding the Fourth Proportional to 26,710.52, 40,062.72 and 6,990.98

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Solution

The fourth proportional to 26,710.52, 40,062.72 and 6,990.98 is: 10,485.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,710.52 : 40,062.72 = 6,990.98 : x
  2. Step 2: Convert to fraction form
    26,710.52/40,062.72 = 6,990.98/x
  3. Step 3: Cross multiply
    26,710.52x = 40,062.72 × 6,990.98
  4. Step 4: Simplify right side
    26,710.52x = 280,077,674.27
  5. Step 5: Solve for x
    x = 280,077,674.27/26,710.52
  6. Step 6: Final answer
    x = 10,485.67

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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.