Home / 12,779.78-19,172.91-6,537.38

Finding the Fourth Proportional to 12,779.78, 19,172.91 and 6,537.38

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Solution

The fourth proportional to 12,779.78, 19,172.91 and 6,537.38 is: 9,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.78 : 19,172.91 = 6,537.38 : x
  2. Step 2: Convert to fraction form
    12,779.78/19,172.91 = 6,537.38/x
  3. Step 3: Cross multiply
    12,779.78x = 19,172.91 × 6,537.38
  4. Step 4: Simplify right side
    12,779.78x = 125,340,598.38
  5. Step 5: Solve for x
    x = 125,340,598.38/12,779.78
  6. Step 6: Final answer
    x = 9,807.73

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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.