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Finding the Fourth Proportional to 18,853.58, 28,064.84 and 18,573.32

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Solution

The fourth proportional to 18,853.58, 28,064.84 and 18,573.32 is: 27,647.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.58 : 28,064.84 = 18,573.32 : x
  2. Step 2: Convert to fraction form
    18,853.58/28,064.84 = 18,573.32/x
  3. Step 3: Cross multiply
    18,853.58x = 28,064.84 × 18,573.32
  4. Step 4: Simplify right side
    18,853.58x = 521,257,254.07
  5. Step 5: Solve for x
    x = 521,257,254.07/18,853.58
  6. Step 6: Final answer
    x = 27,647.65

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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.