Home / 15,371.25-21,208.57-10,256.71

Finding the Fourth Proportional to 15,371.25, 21,208.57 and 10,256.71

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Solution

The fourth proportional to 15,371.25, 21,208.57 and 10,256.71 is: 14,151.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.25 : 21,208.57 = 10,256.71 : x
  2. Step 2: Convert to fraction form
    15,371.25/21,208.57 = 10,256.71/x
  3. Step 3: Cross multiply
    15,371.25x = 21,208.57 × 10,256.71
  4. Step 4: Simplify right side
    15,371.25x = 217,530,152.87
  5. Step 5: Solve for x
    x = 217,530,152.87/15,371.25
  6. Step 6: Final answer
    x = 14,151.75

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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.