Home / 13,613.86-20,438.07-11,574.82

Finding the Fourth Proportional to 13,613.86, 20,438.07 and 11,574.82

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Solution

The fourth proportional to 13,613.86, 20,438.07 and 11,574.82 is: 17,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.86 : 20,438.07 = 11,574.82 : x
  2. Step 2: Convert to fraction form
    13,613.86/20,438.07 = 11,574.82/x
  3. Step 3: Cross multiply
    13,613.86x = 20,438.07 × 11,574.82
  4. Step 4: Simplify right side
    13,613.86x = 236,566,981.40
  5. Step 5: Solve for x
    x = 236,566,981.40/13,613.86
  6. Step 6: Final answer
    x = 17,376.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.