Home / 20,167.52-27,828.24-11,215.28

Finding the Fourth Proportional to 20,167.52, 27,828.24 and 11,215.28

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Solution

The fourth proportional to 20,167.52, 27,828.24 and 11,215.28 is: 15,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.52 : 27,828.24 = 11,215.28 : x
  2. Step 2: Convert to fraction form
    20,167.52/27,828.24 = 11,215.28/x
  3. Step 3: Cross multiply
    20,167.52x = 27,828.24 × 11,215.28
  4. Step 4: Simplify right side
    20,167.52x = 312,101,503.51
  5. Step 5: Solve for x
    x = 312,101,503.51/20,167.52
  6. Step 6: Final answer
    x = 15,475.45

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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.