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Finding the Fourth Proportional to 18,454.58, 27,678.88 and 5,303.96

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Solution

The fourth proportional to 18,454.58, 27,678.88 and 5,303.96 is: 7,955.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.58 : 27,678.88 = 5,303.96 : x
  2. Step 2: Convert to fraction form
    18,454.58/27,678.88 = 5,303.96/x
  3. Step 3: Cross multiply
    18,454.58x = 27,678.88 × 5,303.96
  4. Step 4: Simplify right side
    18,454.58x = 146,807,672.36
  5. Step 5: Solve for x
    x = 146,807,672.36/18,454.58
  6. Step 6: Final answer
    x = 7,955.08

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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.