Home / 15,309.09-21,127.49-10,195.84

Finding the Fourth Proportional to 15,309.09, 21,127.49 and 10,195.84

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Solution

The fourth proportional to 15,309.09, 21,127.49 and 10,195.84 is: 14,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.09 : 21,127.49 = 10,195.84 : x
  2. Step 2: Convert to fraction form
    15,309.09/21,127.49 = 10,195.84/x
  3. Step 3: Cross multiply
    15,309.09x = 21,127.49 × 10,195.84
  4. Step 4: Simplify right side
    15,309.09x = 215,412,507.64
  5. Step 5: Solve for x
    x = 215,412,507.64/15,309.09
  6. Step 6: Final answer
    x = 14,070.89

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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.