Home / 19,200.90-28,785.35-8,116.10

Finding the Fourth Proportional to 19,200.90, 28,785.35 and 8,116.10

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Solution

The fourth proportional to 19,200.90, 28,785.35 and 8,116.10 is: 12,167.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.90 : 28,785.35 = 8,116.10 : x
  2. Step 2: Convert to fraction form
    19,200.90/28,785.35 = 8,116.10/x
  3. Step 3: Cross multiply
    19,200.90x = 28,785.35 × 8,116.10
  4. Step 4: Simplify right side
    19,200.90x = 233,624,779.14
  5. Step 5: Solve for x
    x = 233,624,779.14/19,200.90
  6. Step 6: Final answer
    x = 12,167.39

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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.