Home / 13,154.43-18,153.56-7,186.55

Finding the Fourth Proportional to 13,154.43, 18,153.56 and 7,186.55

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Solution

The fourth proportional to 13,154.43, 18,153.56 and 7,186.55 is: 9,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.43 : 18,153.56 = 7,186.55 : x
  2. Step 2: Convert to fraction form
    13,154.43/18,153.56 = 7,186.55/x
  3. Step 3: Cross multiply
    13,154.43x = 18,153.56 × 7,186.55
  4. Step 4: Simplify right side
    13,154.43x = 130,461,339.92
  5. Step 5: Solve for x
    x = 130,461,339.92/13,154.43
  6. Step 6: Final answer
    x = 9,917.67

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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.