Home / 11,354.60-15,669.36-6,319.28

Finding the Fourth Proportional to 11,354.60, 15,669.36 and 6,319.28

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Solution

The fourth proportional to 11,354.60, 15,669.36 and 6,319.28 is: 8,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354.60 : 15,669.36 = 6,319.28 : x
  2. Step 2: Convert to fraction form
    11,354.60/15,669.36 = 6,319.28/x
  3. Step 3: Cross multiply
    11,354.60x = 15,669.36 × 6,319.28
  4. Step 4: Simplify right side
    11,354.60x = 99,019,073.26
  5. Step 5: Solve for x
    x = 99,019,073.26/11,354.60
  6. Step 6: Final answer
    x = 8,720.61

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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.