Home / 27,954.81-38,578.34-15,208.71

Finding the Fourth Proportional to 27,954.81, 38,578.34 and 15,208.71

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Solution

The fourth proportional to 27,954.81, 38,578.34 and 15,208.71 is: 20,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,954.81 : 38,578.34 = 15,208.71 : x
  2. Step 2: Convert to fraction form
    27,954.81/38,578.34 = 15,208.71/x
  3. Step 3: Cross multiply
    27,954.81x = 38,578.34 × 15,208.71
  4. Step 4: Simplify right side
    27,954.81x = 586,726,785.34
  5. Step 5: Solve for x
    x = 586,726,785.34/27,954.81
  6. Step 6: Final answer
    x = 20,988.40

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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.