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Finding the Fourth Proportional to 19,262.81, 28,894.22 and 5,411.81

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Solution

The fourth proportional to 19,262.81, 28,894.22 and 5,411.81 is: 8,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,262.81 : 28,894.22 = 5,411.81 : x
  2. Step 2: Convert to fraction form
    19,262.81/28,894.22 = 5,411.81/x
  3. Step 3: Cross multiply
    19,262.81x = 28,894.22 × 5,411.81
  4. Step 4: Simplify right side
    19,262.81x = 156,370,094.21
  5. Step 5: Solve for x
    x = 156,370,094.21/19,262.81
  6. Step 6: Final answer
    x = 8,117.72

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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.