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Finding the Fourth Proportional to 18,700.94, 28,056.27 and 8,840

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Solution

The fourth proportional to 18,700.94, 28,056.27 and 8,840 is: 13,262.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.94 : 28,056.27 = 8,840 : x
  2. Step 2: Convert to fraction form
    18,700.94/28,056.27 = 8,840/x
  3. Step 3: Cross multiply
    18,700.94x = 28,056.27 × 8,840
  4. Step 4: Simplify right side
    18,700.94x = 248,017,426.80
  5. Step 5: Solve for x
    x = 248,017,426.80/18,700.94
  6. Step 6: Final answer
    x = 13,262.30

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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.