Home / 20,581.70-28,407.40-11,634.39

Finding the Fourth Proportional to 20,581.70, 28,407.40 and 11,634.39

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Solution

The fourth proportional to 20,581.70, 28,407.40 and 11,634.39 is: 16,058.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.70 : 28,407.40 = 11,634.39 : x
  2. Step 2: Convert to fraction form
    20,581.70/28,407.40 = 11,634.39/x
  3. Step 3: Cross multiply
    20,581.70x = 28,407.40 × 11,634.39
  4. Step 4: Simplify right side
    20,581.70x = 330,502,741.40
  5. Step 5: Solve for x
    x = 330,502,741.40/20,581.70
  6. Step 6: Final answer
    x = 16,058.09

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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.