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Finding the Fourth Proportional to 19,323.92, 28,984.95 and 11,323.15

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Solution

The fourth proportional to 19,323.92, 28,984.95 and 11,323.15 is: 16,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,323.92 : 28,984.95 = 11,323.15 : x
  2. Step 2: Convert to fraction form
    19,323.92/28,984.95 = 11,323.15/x
  3. Step 3: Cross multiply
    19,323.92x = 28,984.95 × 11,323.15
  4. Step 4: Simplify right side
    19,323.92x = 328,200,864.13
  5. Step 5: Solve for x
    x = 328,200,864.13/19,323.92
  6. Step 6: Final answer
    x = 16,984.17

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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.