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Finding the Fourth Proportional to 28,000.05, 42,000.07 and 8,277.07

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Solution

The fourth proportional to 28,000.05, 42,000.07 and 8,277.07 is: 12,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.05 : 42,000.07 = 8,277.07 : x
  2. Step 2: Convert to fraction form
    28,000.05/42,000.07 = 8,277.07/x
  3. Step 3: Cross multiply
    28,000.05x = 42,000.07 × 8,277.07
  4. Step 4: Simplify right side
    28,000.05x = 347,637,309.39
  5. Step 5: Solve for x
    x = 347,637,309.39/28,000.05
  6. Step 6: Final answer
    x = 12,415.60

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Similar ratio
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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.