Home / 11,980.08-17,970.86-3,660.10

Finding the Fourth Proportional to 11,980.08, 17,970.86 and 3,660.10

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Solution

The fourth proportional to 11,980.08, 17,970.86 and 3,660.10 is: 5,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.08 : 17,970.86 = 3,660.10 : x
  2. Step 2: Convert to fraction form
    11,980.08/17,970.86 = 3,660.10/x
  3. Step 3: Cross multiply
    11,980.08x = 17,970.86 × 3,660.10
  4. Step 4: Simplify right side
    11,980.08x = 65,775,108.91
  5. Step 5: Solve for x
    x = 65,775,108.91/11,980.08
  6. Step 6: Final answer
    x = 5,490.37

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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.