Home / 16,905.60-25,336.80-12,283.20

Finding the Fourth Proportional to 16,905.60, 25,336.80 and 12,283.20

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Solution

The fourth proportional to 16,905.60, 25,336.80 and 12,283.20 is: 18,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.60 : 25,336.80 = 12,283.20 : x
  2. Step 2: Convert to fraction form
    16,905.60/25,336.80 = 12,283.20/x
  3. Step 3: Cross multiply
    16,905.60x = 25,336.80 × 12,283.20
  4. Step 4: Simplify right side
    16,905.60x = 311,216,981.76
  5. Step 5: Solve for x
    x = 311,216,981.76/16,905.60
  6. Step 6: Final answer
    x = 18,409.11

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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.