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Finding the Fourth Proportional to 28,384.42, 42,576.64 and 8,663.08

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Solution

The fourth proportional to 28,384.42, 42,576.64 and 8,663.08 is: 12,994.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.42 : 42,576.64 = 8,663.08 : x
  2. Step 2: Convert to fraction form
    28,384.42/42,576.64 = 8,663.08/x
  3. Step 3: Cross multiply
    28,384.42x = 42,576.64 × 8,663.08
  4. Step 4: Simplify right side
    28,384.42x = 368,844,838.45
  5. Step 5: Solve for x
    x = 368,844,838.45/28,384.42
  6. Step 6: Final answer
    x = 12,994.62

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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.