Home / 13,318.02-18,245.42-12,819.47

Finding the Fourth Proportional to 13,318.02, 18,245.42 and 12,819.47

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Solution

The fourth proportional to 13,318.02, 18,245.42 and 12,819.47 is: 17,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.02 : 18,245.42 = 12,819.47 : x
  2. Step 2: Convert to fraction form
    13,318.02/18,245.42 = 12,819.47/x
  3. Step 3: Cross multiply
    13,318.02x = 18,245.42 × 12,819.47
  4. Step 4: Simplify right side
    13,318.02x = 233,896,507.08
  5. Step 5: Solve for x
    x = 233,896,507.08/13,318.02
  6. Step 6: Final answer
    x = 17,562.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.