Home / 13,932.66-20,975-12,707.94

Finding the Fourth Proportional to 13,932.66, 20,975 and 12,707.94

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Solution

The fourth proportional to 13,932.66, 20,975 and 12,707.94 is: 19,131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.66 : 20,975 = 12,707.94 : x
  2. Step 2: Convert to fraction form
    13,932.66/20,975 = 12,707.94/x
  3. Step 3: Cross multiply
    13,932.66x = 20,975 × 12,707.94
  4. Step 4: Simplify right side
    13,932.66x = 266,549,041.50
  5. Step 5: Solve for x
    x = 266,549,041.50/13,932.66
  6. Step 6: Final answer
    x = 19,131.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.