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Finding the Fourth Proportional to 18,507.84, 27,754.56 and 6,658.40

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Solution

The fourth proportional to 18,507.84, 27,754.56 and 6,658.40 is: 9,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.84 : 27,754.56 = 6,658.40 : x
  2. Step 2: Convert to fraction form
    18,507.84/27,754.56 = 6,658.40/x
  3. Step 3: Cross multiply
    18,507.84x = 27,754.56 × 6,658.40
  4. Step 4: Simplify right side
    18,507.84x = 184,800,962.30
  5. Step 5: Solve for x
    x = 184,800,962.30/18,507.84
  6. Step 6: Final answer
    x = 9,985.01

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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.