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Finding the Fourth Proportional to 28,101.96, 42,152.94 and 7,325.40

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Solution

The fourth proportional to 28,101.96, 42,152.94 and 7,325.40 is: 10,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.96 : 42,152.94 = 7,325.40 : x
  2. Step 2: Convert to fraction form
    28,101.96/42,152.94 = 7,325.40/x
  3. Step 3: Cross multiply
    28,101.96x = 42,152.94 × 7,325.40
  4. Step 4: Simplify right side
    28,101.96x = 308,787,146.68
  5. Step 5: Solve for x
    x = 308,787,146.68/28,101.96
  6. Step 6: Final answer
    x = 10,988.10

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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.