Home / 12,886.76-17,785.16-7,222.44

Finding the Fourth Proportional to 12,886.76, 17,785.16 and 7,222.44

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Solution

The fourth proportional to 12,886.76, 17,785.16 and 7,222.44 is: 9,967.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.76 : 17,785.16 = 7,222.44 : x
  2. Step 2: Convert to fraction form
    12,886.76/17,785.16 = 7,222.44/x
  3. Step 3: Cross multiply
    12,886.76x = 17,785.16 × 7,222.44
  4. Step 4: Simplify right side
    12,886.76x = 128,452,250.99
  5. Step 5: Solve for x
    x = 128,452,250.99/12,886.76
  6. Step 6: Final answer
    x = 9,967.77

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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.