Home / 27,639.67-38,142.89-15,703.68

Finding the Fourth Proportional to 27,639.67, 38,142.89 and 15,703.68

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Solution

The fourth proportional to 27,639.67, 38,142.89 and 15,703.68 is: 21,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.67 : 38,142.89 = 15,703.68 : x
  2. Step 2: Convert to fraction form
    27,639.67/38,142.89 = 15,703.68/x
  3. Step 3: Cross multiply
    27,639.67x = 38,142.89 × 15,703.68
  4. Step 4: Simplify right side
    27,639.67x = 598,983,738.84
  5. Step 5: Solve for x
    x = 598,983,738.84/27,639.67
  6. Step 6: Final answer
    x = 21,671.16

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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.