Home / 19,005.60-28,508.40-18,616.80

Finding the Fourth Proportional to 19,005.60, 28,508.40 and 18,616.80

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Solution

The fourth proportional to 19,005.60, 28,508.40 and 18,616.80 is: 27,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.60 : 28,508.40 = 18,616.80 : x
  2. Step 2: Convert to fraction form
    19,005.60/28,508.40 = 18,616.80/x
  3. Step 3: Cross multiply
    19,005.60x = 28,508.40 × 18,616.80
  4. Step 4: Simplify right side
    19,005.60x = 530,735,181.12
  5. Step 5: Solve for x
    x = 530,735,181.12/19,005.60
  6. Step 6: Final answer
    x = 27,925.20

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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.