Home / 10,941.60-16,428.60-7,669.20

Finding the Fourth Proportional to 10,941.60, 16,428.60 and 7,669.20

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Solution

The fourth proportional to 10,941.60, 16,428.60 and 7,669.20 is: 11,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,941.60 : 16,428.60 = 7,669.20 : x
  2. Step 2: Convert to fraction form
    10,941.60/16,428.60 = 7,669.20/x
  3. Step 3: Cross multiply
    10,941.60x = 16,428.60 × 7,669.20
  4. Step 4: Simplify right side
    10,941.60x = 125,994,219.12
  5. Step 5: Solve for x
    x = 125,994,219.12/10,941.60
  6. Step 6: Final answer
    x = 11,515.15

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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.