Home / 20,431.59-28,174.94-14,058.77

Finding the Fourth Proportional to 20,431.59, 28,174.94 and 14,058.77

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Solution

The fourth proportional to 20,431.59, 28,174.94 and 14,058.77 is: 19,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.59 : 28,174.94 = 14,058.77 : x
  2. Step 2: Convert to fraction form
    20,431.59/28,174.94 = 14,058.77/x
  3. Step 3: Cross multiply
    20,431.59x = 28,174.94 × 14,058.77
  4. Step 4: Simplify right side
    20,431.59x = 396,104,842.78
  5. Step 5: Solve for x
    x = 396,104,842.78/20,431.59
  6. Step 6: Final answer
    x = 19,386.88

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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.