Home / 15,645.29-21,590.26-8,571.76

Finding the Fourth Proportional to 15,645.29, 21,590.26 and 8,571.76

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Solution

The fourth proportional to 15,645.29, 21,590.26 and 8,571.76 is: 11,828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.29 : 21,590.26 = 8,571.76 : x
  2. Step 2: Convert to fraction form
    15,645.29/21,590.26 = 8,571.76/x
  3. Step 3: Cross multiply
    15,645.29x = 21,590.26 × 8,571.76
  4. Step 4: Simplify right side
    15,645.29x = 185,066,451.65
  5. Step 5: Solve for x
    x = 185,066,451.65/15,645.29
  6. Step 6: Final answer
    x = 11,828.90

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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.