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Finding the Fourth Proportional to 20,437.68, 30,656.30 and 14,408.94

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Solution

The fourth proportional to 20,437.68, 30,656.30 and 14,408.94 is: 21,613.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.68 : 30,656.30 = 14,408.94 : x
  2. Step 2: Convert to fraction form
    20,437.68/30,656.30 = 14,408.94/x
  3. Step 3: Cross multiply
    20,437.68x = 30,656.30 × 14,408.94
  4. Step 4: Simplify right side
    20,437.68x = 441,724,715.28
  5. Step 5: Solve for x
    x = 441,724,715.28/20,437.68
  6. Step 6: Final answer
    x = 21,613.25

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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.