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Finding the Fourth Proportional to 18,886.32, 28,303.98 and 7,193.16

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Solution

The fourth proportional to 18,886.32, 28,303.98 and 7,193.16 is: 10,780.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.32 : 28,303.98 = 7,193.16 : x
  2. Step 2: Convert to fraction form
    18,886.32/28,303.98 = 7,193.16/x
  3. Step 3: Cross multiply
    18,886.32x = 28,303.98 × 7,193.16
  4. Step 4: Simplify right side
    18,886.32x = 203,595,056.78
  5. Step 5: Solve for x
    x = 203,595,056.78/18,886.32
  6. Step 6: Final answer
    x = 10,780.03

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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.