Home / 13,195.78-19,779.36-6,606.07

Finding the Fourth Proportional to 13,195.78, 19,779.36 and 6,606.07

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Solution

The fourth proportional to 13,195.78, 19,779.36 and 6,606.07 is: 9,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.78 : 19,779.36 = 6,606.07 : x
  2. Step 2: Convert to fraction form
    13,195.78/19,779.36 = 6,606.07/x
  3. Step 3: Cross multiply
    13,195.78x = 19,779.36 × 6,606.07
  4. Step 4: Simplify right side
    13,195.78x = 130,663,836.72
  5. Step 5: Solve for x
    x = 130,663,836.72/13,195.78
  6. Step 6: Final answer
    x = 9,901.94

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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.