Home / 12,915.36-19,372.92-5,513.52

Finding the Fourth Proportional to 12,915.36, 19,372.92 and 5,513.52

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Solution

The fourth proportional to 12,915.36, 19,372.92 and 5,513.52 is: 8,270.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.36 : 19,372.92 = 5,513.52 : x
  2. Step 2: Convert to fraction form
    12,915.36/19,372.92 = 5,513.52/x
  3. Step 3: Cross multiply
    12,915.36x = 19,372.92 × 5,513.52
  4. Step 4: Simplify right side
    12,915.36x = 106,812,981.88
  5. Step 5: Solve for x
    x = 106,812,981.88/12,915.36
  6. Step 6: Final answer
    x = 8,270.23

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1.5x scale

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.