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Finding the Fourth Proportional to 16,392.40, 24,588.60 and 9,815.20

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Solution

The fourth proportional to 16,392.40, 24,588.60 and 9,815.20 is: 14,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,392.40 : 24,588.60 = 9,815.20 : x
  2. Step 2: Convert to fraction form
    16,392.40/24,588.60 = 9,815.20/x
  3. Step 3: Cross multiply
    16,392.40x = 24,588.60 × 9,815.20
  4. Step 4: Simplify right side
    16,392.40x = 241,342,026.72
  5. Step 5: Solve for x
    x = 241,342,026.72/16,392.40
  6. Step 6: Final answer
    x = 14,722.80

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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.