Home / 15,371.07-21,212.11-8,996.50

Finding the Fourth Proportional to 15,371.07, 21,212.11 and 8,996.50

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Solution

The fourth proportional to 15,371.07, 21,212.11 and 8,996.50 is: 12,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.07 : 21,212.11 = 8,996.50 : x
  2. Step 2: Convert to fraction form
    15,371.07/21,212.11 = 8,996.50/x
  3. Step 3: Cross multiply
    15,371.07x = 21,212.11 × 8,996.50
  4. Step 4: Simplify right side
    15,371.07x = 190,834,785.38
  5. Step 5: Solve for x
    x = 190,834,785.38/15,371.07
  6. Step 6: Final answer
    x = 12,415.20

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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.