Home / 27,840.32-38,419.20-15,265.20

Finding the Fourth Proportional to 27,840.32, 38,419.20 and 15,265.20

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Solution

The fourth proportional to 27,840.32, 38,419.20 and 15,265.20 is: 21,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.32 : 38,419.20 = 15,265.20 : x
  2. Step 2: Convert to fraction form
    27,840.32/38,419.20 = 15,265.20/x
  3. Step 3: Cross multiply
    27,840.32x = 38,419.20 × 15,265.20
  4. Step 4: Simplify right side
    27,840.32x = 586,476,771.84
  5. Step 5: Solve for x
    x = 586,476,771.84/27,840.32
  6. Step 6: Final answer
    x = 21,065.73

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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.