Home / 12,739.29-17,582.30-7,075.86

Finding the Fourth Proportional to 12,739.29, 17,582.30 and 7,075.86

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Solution

The fourth proportional to 12,739.29, 17,582.30 and 7,075.86 is: 9,765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.29 : 17,582.30 = 7,075.86 : x
  2. Step 2: Convert to fraction form
    12,739.29/17,582.30 = 7,075.86/x
  3. Step 3: Cross multiply
    12,739.29x = 17,582.30 × 7,075.86
  4. Step 4: Simplify right side
    12,739.29x = 124,409,857.90
  5. Step 5: Solve for x
    x = 124,409,857.90/12,739.29
  6. Step 6: Final answer
    x = 9,765.84

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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.