Home / 13,325.68-18,387.36-7,659.34

Finding the Fourth Proportional to 13,325.68, 18,387.36 and 7,659.34

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Solution

The fourth proportional to 13,325.68, 18,387.36 and 7,659.34 is: 10,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.68 : 18,387.36 = 7,659.34 : x
  2. Step 2: Convert to fraction form
    13,325.68/18,387.36 = 7,659.34/x
  3. Step 3: Cross multiply
    13,325.68x = 18,387.36 × 7,659.34
  4. Step 4: Simplify right side
    13,325.68x = 140,835,041.94
  5. Step 5: Solve for x
    x = 140,835,041.94/13,325.68
  6. Step 6: Final answer
    x = 10,568.69

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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.