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Finding the Fourth Proportional to 18,412.40, 27,602.40 and 11,019.80

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Solution

The fourth proportional to 18,412.40, 27,602.40 and 11,019.80 is: 16,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.40 : 27,602.40 = 11,019.80 : x
  2. Step 2: Convert to fraction form
    18,412.40/27,602.40 = 11,019.80/x
  3. Step 3: Cross multiply
    18,412.40x = 27,602.40 × 11,019.80
  4. Step 4: Simplify right side
    18,412.40x = 304,172,927.52
  5. Step 5: Solve for x
    x = 304,172,927.52/18,412.40
  6. Step 6: Final answer
    x = 16,520.00

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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.