Home / 14,179.76-21,280.98-6,389.18

Finding the Fourth Proportional to 14,179.76, 21,280.98 and 6,389.18

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Solution

The fourth proportional to 14,179.76, 21,280.98 and 6,389.18 is: 9,588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.76 : 21,280.98 = 6,389.18 : x
  2. Step 2: Convert to fraction form
    14,179.76/21,280.98 = 6,389.18/x
  3. Step 3: Cross multiply
    14,179.76x = 21,280.98 × 6,389.18
  4. Step 4: Simplify right side
    14,179.76x = 135,968,011.80
  5. Step 5: Solve for x
    x = 135,968,011.80/14,179.76
  6. Step 6: Final answer
    x = 9,588.88

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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.