Home / 21,240.34-29,313.21-12,742.83

Finding the Fourth Proportional to 21,240.34, 29,313.21 and 12,742.83

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Solution

The fourth proportional to 21,240.34, 29,313.21 and 12,742.83 is: 17,586.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.34 : 29,313.21 = 12,742.83 : x
  2. Step 2: Convert to fraction form
    21,240.34/29,313.21 = 12,742.83/x
  3. Step 3: Cross multiply
    21,240.34x = 29,313.21 × 12,742.83
  4. Step 4: Simplify right side
    21,240.34x = 373,533,251.78
  5. Step 5: Solve for x
    x = 373,533,251.78/21,240.34
  6. Step 6: Final answer
    x = 17,586.03

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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.