Home / 15,645.48-21,591.03-8,571.45

Finding the Fourth Proportional to 15,645.48, 21,591.03 and 8,571.45

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Solution

The fourth proportional to 15,645.48, 21,591.03 and 8,571.45 is: 11,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.48 : 21,591.03 = 8,571.45 : x
  2. Step 2: Convert to fraction form
    15,645.48/21,591.03 = 8,571.45/x
  3. Step 3: Cross multiply
    15,645.48x = 21,591.03 × 8,571.45
  4. Step 4: Simplify right side
    15,645.48x = 185,066,434.09
  5. Step 5: Solve for x
    x = 185,066,434.09/15,645.48
  6. Step 6: Final answer
    x = 11,828.75

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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.