Home / 43,190.91-64,788.66-13,611.06

Finding the Fourth Proportional to 43,190.91, 64,788.66 and 13,611.06

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Solution

The fourth proportional to 43,190.91, 64,788.66 and 13,611.06 is: 20,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,190.91 : 64,788.66 = 13,611.06 : x
  2. Step 2: Convert to fraction form
    43,190.91/64,788.66 = 13,611.06/x
  3. Step 3: Cross multiply
    43,190.91x = 64,788.66 × 13,611.06
  4. Step 4: Simplify right side
    43,190.91x = 881,842,338.58
  5. Step 5: Solve for x
    x = 881,842,338.58/43,190.91
  6. Step 6: Final answer
    x = 20,417.31

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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.