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Finding the Fourth Proportional to 30,368.80, 45,558.68 and 13,736.64

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Solution

The fourth proportional to 30,368.80, 45,558.68 and 13,736.64 is: 20,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.80 : 45,558.68 = 13,736.64 : x
  2. Step 2: Convert to fraction form
    30,368.80/45,558.68 = 13,736.64/x
  3. Step 3: Cross multiply
    30,368.80x = 45,558.68 × 13,736.64
  4. Step 4: Simplify right side
    30,368.80x = 625,823,186.04
  5. Step 5: Solve for x
    x = 625,823,186.04/30,368.80
  6. Step 6: Final answer
    x = 20,607.44

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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.