Home / 14,428.80-21,638.70-5,666.40

Finding the Fourth Proportional to 14,428.80, 21,638.70 and 5,666.40

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Solution

The fourth proportional to 14,428.80, 21,638.70 and 5,666.40 is: 8,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.80 : 21,638.70 = 5,666.40 : x
  2. Step 2: Convert to fraction form
    14,428.80/21,638.70 = 5,666.40/x
  3. Step 3: Cross multiply
    14,428.80x = 21,638.70 × 5,666.40
  4. Step 4: Simplify right side
    14,428.80x = 122,613,529.68
  5. Step 5: Solve for x
    x = 122,613,529.68/14,428.80
  6. Step 6: Final answer
    x = 8,497.83

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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.