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Finding the Fourth Proportional to 13,903.41, 20,840.53 and 6,501.63

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Solution

The fourth proportional to 13,903.41, 20,840.53 and 6,501.63 is: 9,745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.41 : 20,840.53 = 6,501.63 : x
  2. Step 2: Convert to fraction form
    13,903.41/20,840.53 = 6,501.63/x
  3. Step 3: Cross multiply
    13,903.41x = 20,840.53 × 6,501.63
  4. Step 4: Simplify right side
    13,903.41x = 135,497,415.06
  5. Step 5: Solve for x
    x = 135,497,415.06/13,903.41
  6. Step 6: Final answer
    x = 9,745.62

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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.