Home / 19,429.20-26,800.20-12,711.60

Finding the Fourth Proportional to 19,429.20, 26,800.20 and 12,711.60

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Solution

The fourth proportional to 19,429.20, 26,800.20 and 12,711.60 is: 17,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.20 : 26,800.20 = 12,711.60 : x
  2. Step 2: Convert to fraction form
    19,429.20/26,800.20 = 12,711.60/x
  3. Step 3: Cross multiply
    19,429.20x = 26,800.20 × 12,711.60
  4. Step 4: Simplify right side
    19,429.20x = 340,673,422.32
  5. Step 5: Solve for x
    x = 340,673,422.32/19,429.20
  6. Step 6: Final answer
    x = 17,534.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.