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Finding the Fourth Proportional to 19,080.54, 28,625.36 and 7,981.06

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Solution

The fourth proportional to 19,080.54, 28,625.36 and 7,981.06 is: 11,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,080.54 : 28,625.36 = 7,981.06 : x
  2. Step 2: Convert to fraction form
    19,080.54/28,625.36 = 7,981.06/x
  3. Step 3: Cross multiply
    19,080.54x = 28,625.36 × 7,981.06
  4. Step 4: Simplify right side
    19,080.54x = 228,460,715.68
  5. Step 5: Solve for x
    x = 228,460,715.68/19,080.54
  6. Step 6: Final answer
    x = 11,973.49

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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.