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Finding the Fourth Proportional to 18,353.40, 27,530.10 and 6,665.10

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Solution

The fourth proportional to 18,353.40, 27,530.10 and 6,665.10 is: 9,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.40 : 27,530.10 = 6,665.10 : x
  2. Step 2: Convert to fraction form
    18,353.40/27,530.10 = 6,665.10/x
  3. Step 3: Cross multiply
    18,353.40x = 27,530.10 × 6,665.10
  4. Step 4: Simplify right side
    18,353.40x = 183,490,869.51
  5. Step 5: Solve for x
    x = 183,490,869.51/18,353.40
  6. Step 6: Final answer
    x = 9,997.65

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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.