Home / 27,760.64-38,309.68-15,185.36

Finding the Fourth Proportional to 27,760.64, 38,309.68 and 15,185.36

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Solution

The fourth proportional to 27,760.64, 38,309.68 and 15,185.36 is: 20,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,760.64 : 38,309.68 = 15,185.36 : x
  2. Step 2: Convert to fraction form
    27,760.64/38,309.68 = 15,185.36/x
  3. Step 3: Cross multiply
    27,760.64x = 38,309.68 × 15,185.36
  4. Step 4: Simplify right side
    27,760.64x = 581,746,282.28
  5. Step 5: Solve for x
    x = 581,746,282.28/27,760.64
  6. Step 6: Final answer
    x = 20,955.80

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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.