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Finding the Fourth Proportional to 18,347.58, 27,520.56 and 12,784.50

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Solution

The fourth proportional to 18,347.58, 27,520.56 and 12,784.50 is: 19,176.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.58 : 27,520.56 = 12,784.50 : x
  2. Step 2: Convert to fraction form
    18,347.58/27,520.56 = 12,784.50/x
  3. Step 3: Cross multiply
    18,347.58x = 27,520.56 × 12,784.50
  4. Step 4: Simplify right side
    18,347.58x = 351,836,599.32
  5. Step 5: Solve for x
    x = 351,836,599.32/18,347.58
  6. Step 6: Final answer
    x = 19,176.19

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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.