Home / 14,777.39-20,400.30-11,412.65

Finding the Fourth Proportional to 14,777.39, 20,400.30 and 11,412.65

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Solution

The fourth proportional to 14,777.39, 20,400.30 and 11,412.65 is: 15,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.39 : 20,400.30 = 11,412.65 : x
  2. Step 2: Convert to fraction form
    14,777.39/20,400.30 = 11,412.65/x
  3. Step 3: Cross multiply
    14,777.39x = 20,400.30 × 11,412.65
  4. Step 4: Simplify right side
    14,777.39x = 232,821,381.79
  5. Step 5: Solve for x
    x = 232,821,381.79/14,777.39
  6. Step 6: Final answer
    x = 15,755.25

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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.