Home / 11,916.08-16,445.04-7,136.18

Finding the Fourth Proportional to 11,916.08, 16,445.04 and 7,136.18

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Solution

The fourth proportional to 11,916.08, 16,445.04 and 7,136.18 is: 9,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.08 : 16,445.04 = 7,136.18 : x
  2. Step 2: Convert to fraction form
    11,916.08/16,445.04 = 7,136.18/x
  3. Step 3: Cross multiply
    11,916.08x = 16,445.04 × 7,136.18
  4. Step 4: Simplify right side
    11,916.08x = 117,354,765.55
  5. Step 5: Solve for x
    x = 117,354,765.55/11,916.08
  6. Step 6: Final answer
    x = 9,848.44

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Double scale
Find fourth proportional to 11,917.08, 16,446.42 and 7,137.18
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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.