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Finding the Fourth Proportional to 28,644.42, 42,966.63 and 8,924.57

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Solution

The fourth proportional to 28,644.42, 42,966.63 and 8,924.57 is: 13,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,644.42 : 42,966.63 = 8,924.57 : x
  2. Step 2: Convert to fraction form
    28,644.42/42,966.63 = 8,924.57/x
  3. Step 3: Cross multiply
    28,644.42x = 42,966.63 × 8,924.57
  4. Step 4: Simplify right side
    28,644.42x = 383,458,697.10
  5. Step 5: Solve for x
    x = 383,458,697.10/28,644.42
  6. Step 6: Final answer
    x = 13,386.86

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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.