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Finding the Fourth Proportional to 16,868.80, 25,319.40 and 14,406.40

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Solution

The fourth proportional to 16,868.80, 25,319.40 and 14,406.40 is: 21,623.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,868.80 : 25,319.40 = 14,406.40 : x
  2. Step 2: Convert to fraction form
    16,868.80/25,319.40 = 14,406.40/x
  3. Step 3: Cross multiply
    16,868.80x = 25,319.40 × 14,406.40
  4. Step 4: Simplify right side
    16,868.80x = 364,761,404.16
  5. Step 5: Solve for x
    x = 364,761,404.16/16,868.80
  6. Step 6: Final answer
    x = 21,623.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.