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Finding the Fourth Proportional to 19,034.61, 28,558.65 and 8,503.66

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Solution

The fourth proportional to 19,034.61, 28,558.65 and 8,503.66 is: 12,758.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,034.61 : 28,558.65 = 8,503.66 : x
  2. Step 2: Convert to fraction form
    19,034.61/28,558.65 = 8,503.66/x
  3. Step 3: Cross multiply
    19,034.61x = 28,558.65 × 8,503.66
  4. Step 4: Simplify right side
    19,034.61x = 242,853,049.66
  5. Step 5: Solve for x
    x = 242,853,049.66/19,034.61
  6. Step 6: Final answer
    x = 12,758.50

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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.