Home / 27,639.84-38,143.44-15,065.12

Finding the Fourth Proportional to 27,639.84, 38,143.44 and 15,065.12

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Solution

The fourth proportional to 27,639.84, 38,143.44 and 15,065.12 is: 20,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.84 : 38,143.44 = 15,065.12 : x
  2. Step 2: Convert to fraction form
    27,639.84/38,143.44 = 15,065.12/x
  3. Step 3: Cross multiply
    27,639.84x = 38,143.44 × 15,065.12
  4. Step 4: Simplify right side
    27,639.84x = 574,635,500.81
  5. Step 5: Solve for x
    x = 574,635,500.81/27,639.84
  6. Step 6: Final answer
    x = 20,790.12

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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.