Home / 29,309.58-40,405.23-20,911.50

Finding the Fourth Proportional to 29,309.58, 40,405.23 and 20,911.50

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Solution

The fourth proportional to 29,309.58, 40,405.23 and 20,911.50 is: 28,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,309.58 : 40,405.23 = 20,911.50 : x
  2. Step 2: Convert to fraction form
    29,309.58/40,405.23 = 20,911.50/x
  3. Step 3: Cross multiply
    29,309.58x = 40,405.23 × 20,911.50
  4. Step 4: Simplify right side
    29,309.58x = 844,933,967.15
  5. Step 5: Solve for x
    x = 844,933,967.15/29,309.58
  6. Step 6: Final answer
    x = 28,827.91

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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.