Home / 12,445.16-17,174.28-6,779.80

Finding the Fourth Proportional to 12,445.16, 17,174.28 and 6,779.80

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Solution

The fourth proportional to 12,445.16, 17,174.28 and 6,779.80 is: 9,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.16 : 17,174.28 = 6,779.80 : x
  2. Step 2: Convert to fraction form
    12,445.16/17,174.28 = 6,779.80/x
  3. Step 3: Cross multiply
    12,445.16x = 17,174.28 × 6,779.80
  4. Step 4: Simplify right side
    12,445.16x = 116,438,183.54
  5. Step 5: Solve for x
    x = 116,438,183.54/12,445.16
  6. Step 6: Final answer
    x = 9,356.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.