Home / 14,282.29-19,690.68-11,720.71

Finding the Fourth Proportional to 14,282.29, 19,690.68 and 11,720.71

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Solution

The fourth proportional to 14,282.29, 19,690.68 and 11,720.71 is: 16,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,282.29 : 19,690.68 = 11,720.71 : x
  2. Step 2: Convert to fraction form
    14,282.29/19,690.68 = 11,720.71/x
  3. Step 3: Cross multiply
    14,282.29x = 19,690.68 × 11,720.71
  4. Step 4: Simplify right side
    14,282.29x = 230,788,749.98
  5. Step 5: Solve for x
    x = 230,788,749.98/14,282.29
  6. Step 6: Final answer
    x = 16,159.09

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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.