Home / 14,247.20-21,370.80-7,686.20

Finding the Fourth Proportional to 14,247.20, 21,370.80 and 7,686.20

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Solution

The fourth proportional to 14,247.20, 21,370.80 and 7,686.20 is: 11,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,247.20 : 21,370.80 = 7,686.20 : x
  2. Step 2: Convert to fraction form
    14,247.20/21,370.80 = 7,686.20/x
  3. Step 3: Cross multiply
    14,247.20x = 21,370.80 × 7,686.20
  4. Step 4: Simplify right side
    14,247.20x = 164,260,242.96
  5. Step 5: Solve for x
    x = 164,260,242.96/14,247.20
  6. Step 6: Final answer
    x = 11,529.30

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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.