Home / 19,076.90-28,615.35-12,856.10

Finding the Fourth Proportional to 19,076.90, 28,615.35 and 12,856.10

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Solution

The fourth proportional to 19,076.90, 28,615.35 and 12,856.10 is: 19,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,076.90 : 28,615.35 = 12,856.10 : x
  2. Step 2: Convert to fraction form
    19,076.90/28,615.35 = 12,856.10/x
  3. Step 3: Cross multiply
    19,076.90x = 28,615.35 × 12,856.10
  4. Step 4: Simplify right side
    19,076.90x = 367,881,801.14
  5. Step 5: Solve for x
    x = 367,881,801.14/19,076.90
  6. Step 6: Final answer
    x = 19,284.15

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Similar ratio
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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.