Home / 18,346.60-25,316.58-12,687.40

Finding the Fourth Proportional to 18,346.60, 25,316.58 and 12,687.40

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Solution

The fourth proportional to 18,346.60, 25,316.58 and 12,687.40 is: 17,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.60 : 25,316.58 = 12,687.40 : x
  2. Step 2: Convert to fraction form
    18,346.60/25,316.58 = 12,687.40/x
  3. Step 3: Cross multiply
    18,346.60x = 25,316.58 × 12,687.40
  4. Step 4: Simplify right side
    18,346.60x = 321,201,577.09
  5. Step 5: Solve for x
    x = 321,201,577.09/18,346.60
  6. Step 6: Final answer
    x = 17,507.42

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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.