Home / 20,970.11-28,956.26-13,927.97

Finding the Fourth Proportional to 20,970.11, 28,956.26 and 13,927.97

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Solution

The fourth proportional to 20,970.11, 28,956.26 and 13,927.97 is: 19,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.11 : 28,956.26 = 13,927.97 : x
  2. Step 2: Convert to fraction form
    20,970.11/28,956.26 = 13,927.97/x
  3. Step 3: Cross multiply
    20,970.11x = 28,956.26 × 13,927.97
  4. Step 4: Simplify right side
    20,970.11x = 403,302,027.80
  5. Step 5: Solve for x
    x = 403,302,027.80/20,970.11
  6. Step 6: Final answer
    x = 19,232.23

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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.