Home / 20,401.55-28,146.92-13,332.07

Finding the Fourth Proportional to 20,401.55, 28,146.92 and 13,332.07

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Solution

The fourth proportional to 20,401.55, 28,146.92 and 13,332.07 is: 18,393.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.55 : 28,146.92 = 13,332.07 : x
  2. Step 2: Convert to fraction form
    20,401.55/28,146.92 = 13,332.07/x
  3. Step 3: Cross multiply
    20,401.55x = 28,146.92 × 13,332.07
  4. Step 4: Simplify right side
    20,401.55x = 375,256,707.72
  5. Step 5: Solve for x
    x = 375,256,707.72/20,401.55
  6. Step 6: Final answer
    x = 18,393.54

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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.