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Finding the Fourth Proportional to 26,247.64, 36,211.98 and 16,821.40

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Solution

The fourth proportional to 26,247.64, 36,211.98 and 16,821.40 is: 23,207.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,247.64 : 36,211.98 = 16,821.40 : x
  2. Step 2: Convert to fraction form
    26,247.64/36,211.98 = 16,821.40/x
  3. Step 3: Cross multiply
    26,247.64x = 36,211.98 × 16,821.40
  4. Step 4: Simplify right side
    26,247.64x = 609,136,200.37
  5. Step 5: Solve for x
    x = 609,136,200.37/26,247.64
  6. Step 6: Final answer
    x = 23,207.28

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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.