Home / 14,237.60-21,298.80-12,855.20

Finding the Fourth Proportional to 14,237.60, 21,298.80 and 12,855.20

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Solution

The fourth proportional to 14,237.60, 21,298.80 and 12,855.20 is: 19,230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,237.60 : 21,298.80 = 12,855.20 : x
  2. Step 2: Convert to fraction form
    14,237.60/21,298.80 = 12,855.20/x
  3. Step 3: Cross multiply
    14,237.60x = 21,298.80 × 12,855.20
  4. Step 4: Simplify right side
    14,237.60x = 273,800,333.76
  5. Step 5: Solve for x
    x = 273,800,333.76/14,237.60
  6. Step 6: Final answer
    x = 19,230.79

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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.