Home / 28,366.40-39,139.71-16,429.03

Finding the Fourth Proportional to 28,366.40, 39,139.71 and 16,429.03

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Solution

The fourth proportional to 28,366.40, 39,139.71 and 16,429.03 is: 22,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.40 : 39,139.71 = 16,429.03 : x
  2. Step 2: Convert to fraction form
    28,366.40/39,139.71 = 16,429.03/x
  3. Step 3: Cross multiply
    28,366.40x = 39,139.71 × 16,429.03
  4. Step 4: Simplify right side
    28,366.40x = 643,027,310.32
  5. Step 5: Solve for x
    x = 643,027,310.32/28,366.40
  6. Step 6: Final answer
    x = 22,668.62

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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.