Home / 13,318.49-18,457.22-13,130.57

Finding the Fourth Proportional to 13,318.49, 18,457.22 and 13,130.57

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Solution

The fourth proportional to 13,318.49, 18,457.22 and 13,130.57 is: 18,196.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.49 : 18,457.22 = 13,130.57 : x
  2. Step 2: Convert to fraction form
    13,318.49/18,457.22 = 13,130.57/x
  3. Step 3: Cross multiply
    13,318.49x = 18,457.22 × 13,130.57
  4. Step 4: Simplify right side
    13,318.49x = 242,353,819.22
  5. Step 5: Solve for x
    x = 242,353,819.22/13,318.49
  6. Step 6: Final answer
    x = 18,196.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.