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Finding the Fourth Proportional to 18,873.42, 28,314.30 and 6,392.40

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Solution

The fourth proportional to 18,873.42, 28,314.30 and 6,392.40 is: 9,590.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.42 : 28,314.30 = 6,392.40 : x
  2. Step 2: Convert to fraction form
    18,873.42/28,314.30 = 6,392.40/x
  3. Step 3: Cross multiply
    18,873.42x = 28,314.30 × 6,392.40
  4. Step 4: Simplify right side
    18,873.42x = 180,996,331.32
  5. Step 5: Solve for x
    x = 180,996,331.32/18,873.42
  6. Step 6: Final answer
    x = 9,590.01

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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.