Home / 12,739.64-17,582.22-7,151.48

Finding the Fourth Proportional to 12,739.64, 17,582.22 and 7,151.48

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Solution

The fourth proportional to 12,739.64, 17,582.22 and 7,151.48 is: 9,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.64 : 17,582.22 = 7,151.48 : x
  2. Step 2: Convert to fraction form
    12,739.64/17,582.22 = 7,151.48/x
  3. Step 3: Cross multiply
    12,739.64x = 17,582.22 × 7,151.48
  4. Step 4: Simplify right side
    12,739.64x = 125,738,894.69
  5. Step 5: Solve for x
    x = 125,738,894.69/12,739.64
  6. Step 6: Final answer
    x = 9,869.89

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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.