Home / 13,578.72-18,735.84-8,264.32

Finding the Fourth Proportional to 13,578.72, 18,735.84 and 8,264.32

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Solution

The fourth proportional to 13,578.72, 18,735.84 and 8,264.32 is: 11,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.72 : 18,735.84 = 8,264.32 : x
  2. Step 2: Convert to fraction form
    13,578.72/18,735.84 = 8,264.32/x
  3. Step 3: Cross multiply
    13,578.72x = 18,735.84 × 8,264.32
  4. Step 4: Simplify right side
    13,578.72x = 154,838,977.23
  5. Step 5: Solve for x
    x = 154,838,977.23/13,578.72
  6. Step 6: Final answer
    x = 11,403.06

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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.