Home / 19,118.56-28,666.88-7,418.12

Finding the Fourth Proportional to 19,118.56, 28,666.88 and 7,418.12

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Solution

The fourth proportional to 19,118.56, 28,666.88 and 7,418.12 is: 11,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.56 : 28,666.88 = 7,418.12 : x
  2. Step 2: Convert to fraction form
    19,118.56/28,666.88 = 7,418.12/x
  3. Step 3: Cross multiply
    19,118.56x = 28,666.88 × 7,418.12
  4. Step 4: Simplify right side
    19,118.56x = 212,654,355.87
  5. Step 5: Solve for x
    x = 212,654,355.87/19,118.56
  6. Step 6: Final answer
    x = 11,122.93

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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.