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Finding the Fourth Proportional to 28,125.36, 42,192.36 and 8,401.68

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Solution

The fourth proportional to 28,125.36, 42,192.36 and 8,401.68 is: 12,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.36 : 42,192.36 = 8,401.68 : x
  2. Step 2: Convert to fraction form
    28,125.36/42,192.36 = 8,401.68/x
  3. Step 3: Cross multiply
    28,125.36x = 42,192.36 × 8,401.68
  4. Step 4: Simplify right side
    28,125.36x = 354,486,707.16
  5. Step 5: Solve for x
    x = 354,486,707.16/28,125.36
  6. Step 6: Final answer
    x = 12,603.81

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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.