Home / 21,518.21-29,695.05-11,958.05

Finding the Fourth Proportional to 21,518.21, 29,695.05 and 11,958.05

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Solution

The fourth proportional to 21,518.21, 29,695.05 and 11,958.05 is: 16,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.21 : 29,695.05 = 11,958.05 : x
  2. Step 2: Convert to fraction form
    21,518.21/29,695.05 = 11,958.05/x
  3. Step 3: Cross multiply
    21,518.21x = 29,695.05 × 11,958.05
  4. Step 4: Simplify right side
    21,518.21x = 355,094,966.89
  5. Step 5: Solve for x
    x = 355,094,966.89/21,518.21
  6. Step 6: Final answer
    x = 16,502.07

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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.