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Finding the Fourth Proportional to 19,045.87, 28,573.35 and 7,946.39

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Solution

The fourth proportional to 19,045.87, 28,573.35 and 7,946.39 is: 11,921.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,045.87 : 28,573.35 = 7,946.39 : x
  2. Step 2: Convert to fraction form
    19,045.87/28,573.35 = 7,946.39/x
  3. Step 3: Cross multiply
    19,045.87x = 28,573.35 × 7,946.39
  4. Step 4: Simplify right side
    19,045.87x = 227,054,982.71
  5. Step 5: Solve for x
    x = 227,054,982.71/19,045.87
  6. Step 6: Final answer
    x = 11,921.48

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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.