Home / 15,645.07-21,590.08-8,571.57

Finding the Fourth Proportional to 15,645.07, 21,590.08 and 8,571.57

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Solution

The fourth proportional to 15,645.07, 21,590.08 and 8,571.57 is: 11,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.07 : 21,590.08 = 8,571.57 : x
  2. Step 2: Convert to fraction form
    15,645.07/21,590.08 = 8,571.57/x
  3. Step 3: Cross multiply
    15,645.07x = 21,590.08 × 8,571.57
  4. Step 4: Simplify right side
    15,645.07x = 185,060,882.03
  5. Step 5: Solve for x
    x = 185,060,882.03/15,645.07
  6. Step 6: Final answer
    x = 11,828.70

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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.