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Finding the Fourth Proportional to 13,655.60, 20,495.60 and 6,996.63

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Solution

The fourth proportional to 13,655.60, 20,495.60 and 6,996.63 is: 10,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.60 : 20,495.60 = 6,996.63 : x
  2. Step 2: Convert to fraction form
    13,655.60/20,495.60 = 6,996.63/x
  3. Step 3: Cross multiply
    13,655.60x = 20,495.60 × 6,996.63
  4. Step 4: Simplify right side
    13,655.60x = 143,399,992.37
  5. Step 5: Solve for x
    x = 143,399,992.37/13,655.60
  6. Step 6: Final answer
    x = 10,501.19

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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.