Home / 13,929.84-20,903.40-12,495.60

Finding the Fourth Proportional to 13,929.84, 20,903.40 and 12,495.60

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Solution

The fourth proportional to 13,929.84, 20,903.40 and 12,495.60 is: 18,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.84 : 20,903.40 = 12,495.60 : x
  2. Step 2: Convert to fraction form
    13,929.84/20,903.40 = 12,495.60/x
  3. Step 3: Cross multiply
    13,929.84x = 20,903.40 × 12,495.60
  4. Step 4: Simplify right side
    13,929.84x = 261,200,525.04
  5. Step 5: Solve for x
    x = 261,200,525.04/13,929.84
  6. Step 6: Final answer
    x = 18,751.15

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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.