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Finding the Fourth Proportional to 19,223.20, 28,834.80 and 16,842.40

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Solution

The fourth proportional to 19,223.20, 28,834.80 and 16,842.40 is: 25,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.20 : 28,834.80 = 16,842.40 : x
  2. Step 2: Convert to fraction form
    19,223.20/28,834.80 = 16,842.40/x
  3. Step 3: Cross multiply
    19,223.20x = 28,834.80 × 16,842.40
  4. Step 4: Simplify right side
    19,223.20x = 485,647,235.52
  5. Step 5: Solve for x
    x = 485,647,235.52/19,223.20
  6. Step 6: Final answer
    x = 25,263.60

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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.