Home / 27,639.63-38,140.28-15,372.69

Finding the Fourth Proportional to 27,639.63, 38,140.28 and 15,372.69

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Solution

The fourth proportional to 27,639.63, 38,140.28 and 15,372.69 is: 21,212.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.63 : 38,140.28 = 15,372.69 : x
  2. Step 2: Convert to fraction form
    27,639.63/38,140.28 = 15,372.69/x
  3. Step 3: Cross multiply
    27,639.63x = 38,140.28 × 15,372.69
  4. Step 4: Simplify right side
    27,639.63x = 586,318,433.39
  5. Step 5: Solve for x
    x = 586,318,433.39/27,639.63
  6. Step 6: Final answer
    x = 21,212.96

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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.