Home / 12,615.20-17,405.16-7,309.84

Finding the Fourth Proportional to 12,615.20, 17,405.16 and 7,309.84

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Solution

The fourth proportional to 12,615.20, 17,405.16 and 7,309.84 is: 10,085.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.20 : 17,405.16 = 7,309.84 : x
  2. Step 2: Convert to fraction form
    12,615.20/17,405.16 = 7,309.84/x
  3. Step 3: Cross multiply
    12,615.20x = 17,405.16 × 7,309.84
  4. Step 4: Simplify right side
    12,615.20x = 127,228,934.77
  5. Step 5: Solve for x
    x = 127,228,934.77/12,615.20
  6. Step 6: Final answer
    x = 10,085.37

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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.