Home / 21,313.56-29,402.01-15,029.58

Finding the Fourth Proportional to 21,313.56, 29,402.01 and 15,029.58

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Solution

The fourth proportional to 21,313.56, 29,402.01 and 15,029.58 is: 20,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.56 : 29,402.01 = 15,029.58 : x
  2. Step 2: Convert to fraction form
    21,313.56/29,402.01 = 15,029.58/x
  3. Step 3: Cross multiply
    21,313.56x = 29,402.01 × 15,029.58
  4. Step 4: Simplify right side
    21,313.56x = 441,899,861.46
  5. Step 5: Solve for x
    x = 441,899,861.46/21,313.56
  6. Step 6: Final answer
    x = 20,733.27

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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.