Home / 14,435.08-19,920.26-8,147.72

Finding the Fourth Proportional to 14,435.08, 19,920.26 and 8,147.72

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Solution

The fourth proportional to 14,435.08, 19,920.26 and 8,147.72 is: 11,243.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,435.08 : 19,920.26 = 8,147.72 : x
  2. Step 2: Convert to fraction form
    14,435.08/19,920.26 = 8,147.72/x
  3. Step 3: Cross multiply
    14,435.08x = 19,920.26 × 8,147.72
  4. Step 4: Simplify right side
    14,435.08x = 162,304,700.81
  5. Step 5: Solve for x
    x = 162,304,700.81/14,435.08
  6. Step 6: Final answer
    x = 11,243.77

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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.