Home / 15,322.50-21,131.01-9,939.33

Finding the Fourth Proportional to 15,322.50, 21,131.01 and 9,939.33

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Solution

The fourth proportional to 15,322.50, 21,131.01 and 9,939.33 is: 13,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.50 : 21,131.01 = 9,939.33 : x
  2. Step 2: Convert to fraction form
    15,322.50/21,131.01 = 9,939.33/x
  3. Step 3: Cross multiply
    15,322.50x = 21,131.01 × 9,939.33
  4. Step 4: Simplify right side
    15,322.50x = 210,028,081.62
  5. Step 5: Solve for x
    x = 210,028,081.62/15,322.50
  6. Step 6: Final answer
    x = 13,707.17

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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.