Home / 29,313.09-40,419.30-21,230.76

Finding the Fourth Proportional to 29,313.09, 40,419.30 and 21,230.76

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Solution

The fourth proportional to 29,313.09, 40,419.30 and 21,230.76 is: 29,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,313.09 : 40,419.30 = 21,230.76 : x
  2. Step 2: Convert to fraction form
    29,313.09/40,419.30 = 21,230.76/x
  3. Step 3: Cross multiply
    29,313.09x = 40,419.30 × 21,230.76
  4. Step 4: Simplify right side
    29,313.09x = 858,132,461.50
  5. Step 5: Solve for x
    x = 858,132,461.50/29,313.09
  6. Step 6: Final answer
    x = 29,274.72

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Half scale
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Double scale
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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.