Home / 11,354.90-15,671.63-6,638.27

Finding the Fourth Proportional to 11,354.90, 15,671.63 and 6,638.27

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Solution

The fourth proportional to 11,354.90, 15,671.63 and 6,638.27 is: 9,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354.90 : 15,671.63 = 6,638.27 : x
  2. Step 2: Convert to fraction form
    11,354.90/15,671.63 = 6,638.27/x
  3. Step 3: Cross multiply
    11,354.90x = 15,671.63 × 6,638.27
  4. Step 4: Simplify right side
    11,354.90x = 104,032,449.52
  5. Step 5: Solve for x
    x = 104,032,449.52/11,354.90
  6. Step 6: Final answer
    x = 9,161.90

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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.