Home / 13,332.43-18,433.80-13,121.92

Finding the Fourth Proportional to 13,332.43, 18,433.80 and 13,121.92

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Solution

The fourth proportional to 13,332.43, 18,433.80 and 13,121.92 is: 18,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.43 : 18,433.80 = 13,121.92 : x
  2. Step 2: Convert to fraction form
    13,332.43/18,433.80 = 13,121.92/x
  3. Step 3: Cross multiply
    13,332.43x = 18,433.80 × 13,121.92
  4. Step 4: Simplify right side
    13,332.43x = 241,886,848.90
  5. Step 5: Solve for x
    x = 241,886,848.90/13,332.43
  6. Step 6: Final answer
    x = 18,142.74

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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.