Home / 12,916.81-19,359.01-5,512.60

Finding the Fourth Proportional to 12,916.81, 19,359.01 and 5,512.60

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Solution

The fourth proportional to 12,916.81, 19,359.01 and 5,512.60 is: 8,261.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.81 : 19,359.01 = 5,512.60 : x
  2. Step 2: Convert to fraction form
    12,916.81/19,359.01 = 5,512.60/x
  3. Step 3: Cross multiply
    12,916.81x = 19,359.01 × 5,512.60
  4. Step 4: Simplify right side
    12,916.81x = 106,718,478.53
  5. Step 5: Solve for x
    x = 106,718,478.53/12,916.81
  6. Step 6: Final answer
    x = 8,261.98

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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.