Home / 28,429.43-39,248.67-18,885.68

Finding the Fourth Proportional to 28,429.43, 39,248.67 and 18,885.68

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Solution

The fourth proportional to 28,429.43, 39,248.67 and 18,885.68 is: 26,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.43 : 39,248.67 = 18,885.68 : x
  2. Step 2: Convert to fraction form
    28,429.43/39,248.67 = 18,885.68/x
  3. Step 3: Cross multiply
    28,429.43x = 39,248.67 × 18,885.68
  4. Step 4: Simplify right side
    28,429.43x = 741,237,625.80
  5. Step 5: Solve for x
    x = 741,237,625.80/28,429.43
  6. Step 6: Final answer
    x = 26,072.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.