Home / 14,139.68-21,176.70-13,647.62

Finding the Fourth Proportional to 14,139.68, 21,176.70 and 13,647.62

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Solution

The fourth proportional to 14,139.68, 21,176.70 and 13,647.62 is: 20,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.68 : 21,176.70 = 13,647.62 : x
  2. Step 2: Convert to fraction form
    14,139.68/21,176.70 = 13,647.62/x
  3. Step 3: Cross multiply
    14,139.68x = 21,176.70 × 13,647.62
  4. Step 4: Simplify right side
    14,139.68x = 289,011,554.45
  5. Step 5: Solve for x
    x = 289,011,554.45/14,139.68
  6. Step 6: Final answer
    x = 20,439.75

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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.