Home / 28,679.40-43,003.80-9,954.66

Finding the Fourth Proportional to 28,679.40, 43,003.80 and 9,954.66

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Solution

The fourth proportional to 28,679.40, 43,003.80 and 9,954.66 is: 14,926.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.40 : 43,003.80 = 9,954.66 : x
  2. Step 2: Convert to fraction form
    28,679.40/43,003.80 = 9,954.66/x
  3. Step 3: Cross multiply
    28,679.40x = 43,003.80 × 9,954.66
  4. Step 4: Simplify right side
    28,679.40x = 428,088,207.71
  5. Step 5: Solve for x
    x = 428,088,207.71/28,679.40
  6. Step 6: Final answer
    x = 14,926.68

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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.