Home / 15,049.14-20,720.30-13,255.50

Finding the Fourth Proportional to 15,049.14, 20,720.30 and 13,255.50

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Solution

The fourth proportional to 15,049.14, 20,720.30 and 13,255.50 is: 18,250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,049.14 : 20,720.30 = 13,255.50 : x
  2. Step 2: Convert to fraction form
    15,049.14/20,720.30 = 13,255.50/x
  3. Step 3: Cross multiply
    15,049.14x = 20,720.30 × 13,255.50
  4. Step 4: Simplify right side
    15,049.14x = 274,657,870.37
  5. Step 5: Solve for x
    x = 274,657,870.37/15,049.14
  6. Step 6: Final answer
    x = 18,250.74

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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.