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Finding the Fourth Proportional to 13,884.99, 19,160.90 and 7,916.30

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Solution

The fourth proportional to 13,884.99, 19,160.90 and 7,916.30 is: 10,924.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.99 : 19,160.90 = 7,916.30 : x
  2. Step 2: Convert to fraction form
    13,884.99/19,160.90 = 7,916.30/x
  3. Step 3: Cross multiply
    13,884.99x = 19,160.90 × 7,916.30
  4. Step 4: Simplify right side
    13,884.99x = 151,683,297.28
  5. Step 5: Solve for x
    x = 151,683,297.28/13,884.99
  6. Step 6: Final answer
    x = 10,924.26

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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.