Home / 12,775.32-17,628.90-7,109.64

Finding the Fourth Proportional to 12,775.32, 17,628.90 and 7,109.64

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Solution

The fourth proportional to 12,775.32, 17,628.90 and 7,109.64 is: 9,810.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.32 : 17,628.90 = 7,109.64 : x
  2. Step 2: Convert to fraction form
    12,775.32/17,628.90 = 7,109.64/x
  3. Step 3: Cross multiply
    12,775.32x = 17,628.90 × 7,109.64
  4. Step 4: Simplify right side
    12,775.32x = 125,335,132.60
  5. Step 5: Solve for x
    x = 125,335,132.60/12,775.32
  6. Step 6: Final answer
    x = 9,810.72

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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.