Home / 15,544.36-21,450.90-8,470.72

Finding the Fourth Proportional to 15,544.36, 21,450.90 and 8,470.72

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Solution

The fourth proportional to 15,544.36, 21,450.90 and 8,470.72 is: 11,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,544.36 : 21,450.90 = 8,470.72 : x
  2. Step 2: Convert to fraction form
    15,544.36/21,450.90 = 8,470.72/x
  3. Step 3: Cross multiply
    15,544.36x = 21,450.90 × 8,470.72
  4. Step 4: Simplify right side
    15,544.36x = 181,704,567.65
  5. Step 5: Solve for x
    x = 181,704,567.65/15,544.36
  6. Step 6: Final answer
    x = 11,689.42

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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.