Home / 15,232.76-21,021.09-8,518.40

Finding the Fourth Proportional to 15,232.76, 21,021.09 and 8,518.40

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Solution

The fourth proportional to 15,232.76, 21,021.09 and 8,518.40 is: 11,755.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,232.76 : 21,021.09 = 8,518.40 : x
  2. Step 2: Convert to fraction form
    15,232.76/21,021.09 = 8,518.40/x
  3. Step 3: Cross multiply
    15,232.76x = 21,021.09 × 8,518.40
  4. Step 4: Simplify right side
    15,232.76x = 179,066,053.06
  5. Step 5: Solve for x
    x = 179,066,053.06/15,232.76
  6. Step 6: Final answer
    x = 11,755.33

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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.