Home / 27,740.81-38,282.32-15,165.56

Finding the Fourth Proportional to 27,740.81, 38,282.32 and 15,165.56

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Solution

The fourth proportional to 27,740.81, 38,282.32 and 15,165.56 is: 20,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.81 : 38,282.32 = 15,165.56 : x
  2. Step 2: Convert to fraction form
    27,740.81/38,282.32 = 15,165.56/x
  3. Step 3: Cross multiply
    27,740.81x = 38,282.32 × 15,165.56
  4. Step 4: Simplify right side
    27,740.81x = 580,572,935.56
  5. Step 5: Solve for x
    x = 580,572,935.56/27,740.81
  6. Step 6: Final answer
    x = 20,928.48

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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.