Home / 15,496.50-21,441.48-13,511.20

Finding the Fourth Proportional to 15,496.50, 21,441.48 and 13,511.20

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Solution

The fourth proportional to 15,496.50, 21,441.48 and 13,511.20 is: 18,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.50 : 21,441.48 = 13,511.20 : x
  2. Step 2: Convert to fraction form
    15,496.50/21,441.48 = 13,511.20/x
  3. Step 3: Cross multiply
    15,496.50x = 21,441.48 × 13,511.20
  4. Step 4: Simplify right side
    15,496.50x = 289,700,124.58
  5. Step 5: Solve for x
    x = 289,700,124.58/15,496.50
  6. Step 6: Final answer
    x = 18,694.55

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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.