Home / 18,885.12-26,056.80-11,808

Finding the Fourth Proportional to 18,885.12, 26,056.80 and 11,808

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Solution

The fourth proportional to 18,885.12, 26,056.80 and 11,808 is: 16,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.12 : 26,056.80 = 11,808 : x
  2. Step 2: Convert to fraction form
    18,885.12/26,056.80 = 11,808/x
  3. Step 3: Cross multiply
    18,885.12x = 26,056.80 × 11,808
  4. Step 4: Simplify right side
    18,885.12x = 307,678,694.40
  5. Step 5: Solve for x
    x = 307,678,694.40/18,885.12
  6. Step 6: Final answer
    x = 16,292.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.