Home / 19,659.24-27,130.14-15,415.38

Finding the Fourth Proportional to 19,659.24, 27,130.14 and 15,415.38

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Solution

The fourth proportional to 19,659.24, 27,130.14 and 15,415.38 is: 21,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.24 : 27,130.14 = 15,415.38 : x
  2. Step 2: Convert to fraction form
    19,659.24/27,130.14 = 15,415.38/x
  3. Step 3: Cross multiply
    19,659.24x = 27,130.14 × 15,415.38
  4. Step 4: Simplify right side
    19,659.24x = 418,221,417.55
  5. Step 5: Solve for x
    x = 418,221,417.55/19,659.24
  6. Step 6: Final answer
    x = 21,273.53

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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.