Home / 18,346.40-25,318.12-10,390.16

Finding the Fourth Proportional to 18,346.40, 25,318.12 and 10,390.16

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Solution

The fourth proportional to 18,346.40, 25,318.12 and 10,390.16 is: 14,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.40 : 25,318.12 = 10,390.16 : x
  2. Step 2: Convert to fraction form
    18,346.40/25,318.12 = 10,390.16/x
  3. Step 3: Cross multiply
    18,346.40x = 25,318.12 × 10,390.16
  4. Step 4: Simplify right side
    18,346.40x = 263,059,317.70
  5. Step 5: Solve for x
    x = 263,059,317.70/18,346.40
  6. Step 6: Final answer
    x = 14,338.47

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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.