Home / 13,153.68-18,140.76-11,719.98

Finding the Fourth Proportional to 13,153.68, 18,140.76 and 11,719.98

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Solution

The fourth proportional to 13,153.68, 18,140.76 and 11,719.98 is: 16,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.68 : 18,140.76 = 11,719.98 : x
  2. Step 2: Convert to fraction form
    13,153.68/18,140.76 = 11,719.98/x
  3. Step 3: Cross multiply
    13,153.68x = 18,140.76 × 11,719.98
  4. Step 4: Simplify right side
    13,153.68x = 212,609,344.38
  5. Step 5: Solve for x
    x = 212,609,344.38/13,153.68
  6. Step 6: Final answer
    x = 16,163.49

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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.