Home / 20,030.09-27,638.45-11,530.57

Finding the Fourth Proportional to 20,030.09, 27,638.45 and 11,530.57

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Solution

The fourth proportional to 20,030.09, 27,638.45 and 11,530.57 is: 15,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.09 : 27,638.45 = 11,530.57 : x
  2. Step 2: Convert to fraction form
    20,030.09/27,638.45 = 11,530.57/x
  3. Step 3: Cross multiply
    20,030.09x = 27,638.45 × 11,530.57
  4. Step 4: Simplify right side
    20,030.09x = 318,686,984.49
  5. Step 5: Solve for x
    x = 318,686,984.49/20,030.09
  6. Step 6: Final answer
    x = 15,910.42

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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.