Home / 38,965.60-58,453.80-13,999.60

Finding the Fourth Proportional to 38,965.60, 58,453.80 and 13,999.60

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Solution

The fourth proportional to 38,965.60, 58,453.80 and 13,999.60 is: 21,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,965.60 : 58,453.80 = 13,999.60 : x
  2. Step 2: Convert to fraction form
    38,965.60/58,453.80 = 13,999.60/x
  3. Step 3: Cross multiply
    38,965.60x = 58,453.80 × 13,999.60
  4. Step 4: Simplify right side
    38,965.60x = 818,329,818.48
  5. Step 5: Solve for x
    x = 818,329,818.48/38,965.60
  6. Step 6: Final answer
    x = 21,001.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.