Home / 12,688.26-17,509.77-7,383.39

Finding the Fourth Proportional to 12,688.26, 17,509.77 and 7,383.39

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Solution

The fourth proportional to 12,688.26, 17,509.77 and 7,383.39 is: 10,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.26 : 17,509.77 = 7,383.39 : x
  2. Step 2: Convert to fraction form
    12,688.26/17,509.77 = 7,383.39/x
  3. Step 3: Cross multiply
    12,688.26x = 17,509.77 × 7,383.39
  4. Step 4: Simplify right side
    12,688.26x = 129,281,460.72
  5. Step 5: Solve for x
    x = 129,281,460.72/12,688.26
  6. Step 6: Final answer
    x = 10,189.06

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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.