Home / 11,779.21-17,630.36-8,658.40

Finding the Fourth Proportional to 11,779.21, 17,630.36 and 8,658.40

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Solution

The fourth proportional to 11,779.21, 17,630.36 and 8,658.40 is: 12,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,779.21 : 17,630.36 = 8,658.40 : x
  2. Step 2: Convert to fraction form
    11,779.21/17,630.36 = 8,658.40/x
  3. Step 3: Cross multiply
    11,779.21x = 17,630.36 × 8,658.40
  4. Step 4: Simplify right side
    11,779.21x = 152,650,709.02
  5. Step 5: Solve for x
    x = 152,650,709.02/11,779.21
  6. Step 6: Final answer
    x = 12,959.33

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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.