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Finding the Fourth Proportional to 28,609.88, 42,926.63 and 15,446.75

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Solution

The fourth proportional to 28,609.88, 42,926.63 and 15,446.75 is: 23,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.88 : 42,926.63 = 15,446.75 : x
  2. Step 2: Convert to fraction form
    28,609.88/42,926.63 = 15,446.75/x
  3. Step 3: Cross multiply
    28,609.88x = 42,926.63 × 15,446.75
  4. Step 4: Simplify right side
    28,609.88x = 663,076,630.09
  5. Step 5: Solve for x
    x = 663,076,630.09/28,609.88
  6. Step 6: Final answer
    x = 23,176.50

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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.