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Finding the Fourth Proportional to 21,137.48, 29,162.48 and 12,056.32

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Solution

The fourth proportional to 21,137.48, 29,162.48 and 12,056.32 is: 16,633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.48 : 29,162.48 = 12,056.32 : x
  2. Step 2: Convert to fraction form
    21,137.48/29,162.48 = 12,056.32/x
  3. Step 3: Cross multiply
    21,137.48x = 29,162.48 × 12,056.32
  4. Step 4: Simplify right side
    21,137.48x = 351,592,075.20
  5. Step 5: Solve for x
    x = 351,592,075.20/21,137.48
  6. Step 6: Final answer
    x = 16,633.59

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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.