Home / 13,206.37-18,222.47-7,538.53

Finding the Fourth Proportional to 13,206.37, 18,222.47 and 7,538.53

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Solution

The fourth proportional to 13,206.37, 18,222.47 and 7,538.53 is: 10,401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.37 : 18,222.47 = 7,538.53 : x
  2. Step 2: Convert to fraction form
    13,206.37/18,222.47 = 7,538.53/x
  3. Step 3: Cross multiply
    13,206.37x = 18,222.47 × 7,538.53
  4. Step 4: Simplify right side
    13,206.37x = 137,370,564.50
  5. Step 5: Solve for x
    x = 137,370,564.50/13,206.37
  6. Step 6: Final answer
    x = 10,401.85

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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.