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Finding the Fourth Proportional to 19,225.95, 28,838.93 and 8,129.76

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Solution

The fourth proportional to 19,225.95, 28,838.93 and 8,129.76 is: 12,194.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,225.95 : 28,838.93 = 8,129.76 : x
  2. Step 2: Convert to fraction form
    19,225.95/28,838.93 = 8,129.76/x
  3. Step 3: Cross multiply
    19,225.95x = 28,838.93 × 8,129.76
  4. Step 4: Simplify right side
    19,225.95x = 234,453,538.91
  5. Step 5: Solve for x
    x = 234,453,538.91/19,225.95
  6. Step 6: Final answer
    x = 12,194.64

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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.