Home / 12,215.88-16,858.26-7,434.36

Finding the Fourth Proportional to 12,215.88, 16,858.26 and 7,434.36

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Solution

The fourth proportional to 12,215.88, 16,858.26 and 7,434.36 is: 10,259.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.88 : 16,858.26 = 7,434.36 : x
  2. Step 2: Convert to fraction form
    12,215.88/16,858.26 = 7,434.36/x
  3. Step 3: Cross multiply
    12,215.88x = 16,858.26 × 7,434.36
  4. Step 4: Simplify right side
    12,215.88x = 125,330,373.81
  5. Step 5: Solve for x
    x = 125,330,373.81/12,215.88
  6. Step 6: Final answer
    x = 10,259.63

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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.