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Finding the Fourth Proportional to 14,697.68, 20,278.68 and 13,958.96

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Solution

The fourth proportional to 14,697.68, 20,278.68 and 13,958.96 is: 19,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,697.68 : 20,278.68 = 13,958.96 : x
  2. Step 2: Convert to fraction form
    14,697.68/20,278.68 = 13,958.96/x
  3. Step 3: Cross multiply
    14,697.68x = 20,278.68 × 13,958.96
  4. Step 4: Simplify right side
    14,697.68x = 283,069,282.97
  5. Step 5: Solve for x
    x = 283,069,282.97/14,697.68
  6. Step 6: Final answer
    x = 19,259.45

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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.