Home / 29,311.70-40,503.78-21,340.08

Finding the Fourth Proportional to 29,311.70, 40,503.78 and 21,340.08

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Solution

The fourth proportional to 29,311.70, 40,503.78 and 21,340.08 is: 29,488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,311.70 : 40,503.78 = 21,340.08 : x
  2. Step 2: Convert to fraction form
    29,311.70/40,503.78 = 21,340.08/x
  3. Step 3: Cross multiply
    29,311.70x = 40,503.78 × 21,340.08
  4. Step 4: Simplify right side
    29,311.70x = 864,353,905.50
  5. Step 5: Solve for x
    x = 864,353,905.50/29,311.70
  6. Step 6: Final answer
    x = 29,488.36

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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.