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Finding the Fourth Proportional to 21,461.55, 29,617.01 and 12,029.50

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Solution

The fourth proportional to 21,461.55, 29,617.01 and 12,029.50 is: 16,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.55 : 29,617.01 = 12,029.50 : x
  2. Step 2: Convert to fraction form
    21,461.55/29,617.01 = 12,029.50/x
  3. Step 3: Cross multiply
    21,461.55x = 29,617.01 × 12,029.50
  4. Step 4: Simplify right side
    21,461.55x = 356,277,821.80
  5. Step 5: Solve for x
    x = 356,277,821.80/21,461.55
  6. Step 6: Final answer
    x = 16,600.75

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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.