Home / 19,419.81-26,803.68-12,693.87

Finding the Fourth Proportional to 19,419.81, 26,803.68 and 12,693.87

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Solution

The fourth proportional to 19,419.81, 26,803.68 and 12,693.87 is: 17,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.81 : 26,803.68 = 12,693.87 : x
  2. Step 2: Convert to fraction form
    19,419.81/26,803.68 = 12,693.87/x
  3. Step 3: Cross multiply
    19,419.81x = 26,803.68 × 12,693.87
  4. Step 4: Simplify right side
    19,419.81x = 340,242,429.44
  5. Step 5: Solve for x
    x = 340,242,429.44/19,419.81
  6. Step 6: Final answer
    x = 17,520.38

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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.