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Finding the Fourth Proportional to 28,341.42, 42,516.96 and 8,621.94

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Solution

The fourth proportional to 28,341.42, 42,516.96 and 8,621.94 is: 12,934.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.42 : 42,516.96 = 8,621.94 : x
  2. Step 2: Convert to fraction form
    28,341.42/42,516.96 = 8,621.94/x
  3. Step 3: Cross multiply
    28,341.42x = 42,516.96 × 8,621.94
  4. Step 4: Simplify right side
    28,341.42x = 366,578,678.10
  5. Step 5: Solve for x
    x = 366,578,678.10/28,341.42
  6. Step 6: Final answer
    x = 12,934.38

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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.