Home / 19,719.05-27,221.67-12,649.77

Finding the Fourth Proportional to 19,719.05, 27,221.67 and 12,649.77

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Solution

The fourth proportional to 19,719.05, 27,221.67 and 12,649.77 is: 17,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.05 : 27,221.67 = 12,649.77 : x
  2. Step 2: Convert to fraction form
    19,719.05/27,221.67 = 12,649.77/x
  3. Step 3: Cross multiply
    19,719.05x = 27,221.67 × 12,649.77
  4. Step 4: Simplify right side
    19,719.05x = 344,347,864.52
  5. Step 5: Solve for x
    x = 344,347,864.52/19,719.05
  6. Step 6: Final answer
    x = 17,462.70

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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.