Home / 13,465.08-18,581.94-7,875

Finding the Fourth Proportional to 13,465.08, 18,581.94 and 7,875

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Solution

The fourth proportional to 13,465.08, 18,581.94 and 7,875 is: 10,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.08 : 18,581.94 = 7,875 : x
  2. Step 2: Convert to fraction form
    13,465.08/18,581.94 = 7,875/x
  3. Step 3: Cross multiply
    13,465.08x = 18,581.94 × 7,875
  4. Step 4: Simplify right side
    13,465.08x = 146,332,777.50
  5. Step 5: Solve for x
    x = 146,332,777.50/13,465.08
  6. Step 6: Final answer
    x = 10,867.58

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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.