Home / 11,820.79-16,309.81-7,037.66

Finding the Fourth Proportional to 11,820.79, 16,309.81 and 7,037.66

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Solution

The fourth proportional to 11,820.79, 16,309.81 and 7,037.66 is: 9,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.79 : 16,309.81 = 7,037.66 : x
  2. Step 2: Convert to fraction form
    11,820.79/16,309.81 = 7,037.66/x
  3. Step 3: Cross multiply
    11,820.79x = 16,309.81 × 7,037.66
  4. Step 4: Simplify right side
    11,820.79x = 114,782,920.62
  5. Step 5: Solve for x
    x = 114,782,920.62/11,820.79
  6. Step 6: Final answer
    x = 9,710.26

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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.