Home / 12,916.16-19,372.80-4,150.40

Finding the Fourth Proportional to 12,916.16, 19,372.80 and 4,150.40

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Solution

The fourth proportional to 12,916.16, 19,372.80 and 4,150.40 is: 6,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.16 : 19,372.80 = 4,150.40 : x
  2. Step 2: Convert to fraction form
    12,916.16/19,372.80 = 4,150.40/x
  3. Step 3: Cross multiply
    12,916.16x = 19,372.80 × 4,150.40
  4. Step 4: Simplify right side
    12,916.16x = 80,404,869.12
  5. Step 5: Solve for x
    x = 80,404,869.12/12,916.16
  6. Step 6: Final answer
    x = 6,225.14

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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.