Home / 14,290.42-19,720.79-8,002.79

Finding the Fourth Proportional to 14,290.42, 19,720.79 and 8,002.79

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Solution

The fourth proportional to 14,290.42, 19,720.79 and 8,002.79 is: 11,043.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.42 : 19,720.79 = 8,002.79 : x
  2. Step 2: Convert to fraction form
    14,290.42/19,720.79 = 8,002.79/x
  3. Step 3: Cross multiply
    14,290.42x = 19,720.79 × 8,002.79
  4. Step 4: Simplify right side
    14,290.42x = 157,821,462.29
  5. Step 5: Solve for x
    x = 157,821,462.29/14,290.42
  6. Step 6: Final answer
    x = 11,043.86

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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.