Home / 28,270.13-39,012.08-15,523.56

Finding the Fourth Proportional to 28,270.13, 39,012.08 and 15,523.56

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Solution

The fourth proportional to 28,270.13, 39,012.08 and 15,523.56 is: 21,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.13 : 39,012.08 = 15,523.56 : x
  2. Step 2: Convert to fraction form
    28,270.13/39,012.08 = 15,523.56/x
  3. Step 3: Cross multiply
    28,270.13x = 39,012.08 × 15,523.56
  4. Step 4: Simplify right side
    28,270.13x = 605,606,286.99
  5. Step 5: Solve for x
    x = 605,606,286.99/28,270.13
  6. Step 6: Final answer
    x = 21,422.13

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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.