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Finding the Fourth Proportional to 20,846.76, 28,768.89 and 14,888.58

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Solution

The fourth proportional to 20,846.76, 28,768.89 and 14,888.58 is: 20,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.76 : 28,768.89 = 14,888.58 : x
  2. Step 2: Convert to fraction form
    20,846.76/28,768.89 = 14,888.58/x
  3. Step 3: Cross multiply
    20,846.76x = 28,768.89 × 14,888.58
  4. Step 4: Simplify right side
    20,846.76x = 428,327,776.43
  5. Step 5: Solve for x
    x = 428,327,776.43/20,846.76
  6. Step 6: Final answer
    x = 20,546.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.