Home / 13,318.07-18,378.63-7,350.30

Finding the Fourth Proportional to 13,318.07, 18,378.63 and 7,350.30

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Solution

The fourth proportional to 13,318.07, 18,378.63 and 7,350.30 is: 10,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.07 : 18,378.63 = 7,350.30 : x
  2. Step 2: Convert to fraction form
    13,318.07/18,378.63 = 7,350.30/x
  3. Step 3: Cross multiply
    13,318.07x = 18,378.63 × 7,350.30
  4. Step 4: Simplify right side
    13,318.07x = 135,088,444.09
  5. Step 5: Solve for x
    x = 135,088,444.09/13,318.07
  6. Step 6: Final answer
    x = 10,143.25

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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.