Home / 19,086.64-28,416.15-18,994.30

Finding the Fourth Proportional to 19,086.64, 28,416.15 and 18,994.30

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Solution

The fourth proportional to 19,086.64, 28,416.15 and 18,994.30 is: 28,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,086.64 : 28,416.15 = 18,994.30 : x
  2. Step 2: Convert to fraction form
    19,086.64/28,416.15 = 18,994.30/x
  3. Step 3: Cross multiply
    19,086.64x = 28,416.15 × 18,994.30
  4. Step 4: Simplify right side
    19,086.64x = 539,744,806.90
  5. Step 5: Solve for x
    x = 539,744,806.90/19,086.64
  6. Step 6: Final answer
    x = 28,278.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.