Home / 20,005.28-27,574.16-15,028.64

Finding the Fourth Proportional to 20,005.28, 27,574.16 and 15,028.64

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Solution

The fourth proportional to 20,005.28, 27,574.16 and 15,028.64 is: 20,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.28 : 27,574.16 = 15,028.64 : x
  2. Step 2: Convert to fraction form
    20,005.28/27,574.16 = 15,028.64/x
  3. Step 3: Cross multiply
    20,005.28x = 27,574.16 × 15,028.64
  4. Step 4: Simplify right side
    20,005.28x = 414,402,123.94
  5. Step 5: Solve for x
    x = 414,402,123.94/20,005.28
  6. Step 6: Final answer
    x = 20,714.64

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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.