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Finding the Fourth Proportional to 28,039.42, 42,051.93 and 8,313.49

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Solution

The fourth proportional to 28,039.42, 42,051.93 and 8,313.49 is: 12,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.42 : 42,051.93 = 8,313.49 : x
  2. Step 2: Convert to fraction form
    28,039.42/42,051.93 = 8,313.49/x
  3. Step 3: Cross multiply
    28,039.42x = 42,051.93 × 8,313.49
  4. Step 4: Simplify right side
    28,039.42x = 349,598,299.54
  5. Step 5: Solve for x
    x = 349,598,299.54/28,039.42
  6. Step 6: Final answer
    x = 12,468.10

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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.