Home / 19,210.40-28,815.60-17,784.80

Finding the Fourth Proportional to 19,210.40, 28,815.60 and 17,784.80

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Solution

The fourth proportional to 19,210.40, 28,815.60 and 17,784.80 is: 26,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.40 : 28,815.60 = 17,784.80 : x
  2. Step 2: Convert to fraction form
    19,210.40/28,815.60 = 17,784.80/x
  3. Step 3: Cross multiply
    19,210.40x = 28,815.60 × 17,784.80
  4. Step 4: Simplify right side
    19,210.40x = 512,479,682.88
  5. Step 5: Solve for x
    x = 512,479,682.88/19,210.40
  6. Step 6: Final answer
    x = 26,677.20

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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.