Home / 21,420.24-29,560.08-12,472.96

Finding the Fourth Proportional to 21,420.24, 29,560.08 and 12,472.96

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Solution

The fourth proportional to 21,420.24, 29,560.08 and 12,472.96 is: 17,212.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.24 : 29,560.08 = 12,472.96 : x
  2. Step 2: Convert to fraction form
    21,420.24/29,560.08 = 12,472.96/x
  3. Step 3: Cross multiply
    21,420.24x = 29,560.08 × 12,472.96
  4. Step 4: Simplify right side
    21,420.24x = 368,701,695.44
  5. Step 5: Solve for x
    x = 368,701,695.44/21,420.24
  6. Step 6: Final answer
    x = 17,212.77

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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.