Home / 28,367.16-39,140.74-16,429.78

Finding the Fourth Proportional to 28,367.16, 39,140.74 and 16,429.78

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Solution

The fourth proportional to 28,367.16, 39,140.74 and 16,429.78 is: 22,669.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.16 : 39,140.74 = 16,429.78 : x
  2. Step 2: Convert to fraction form
    28,367.16/39,140.74 = 16,429.78/x
  3. Step 3: Cross multiply
    28,367.16x = 39,140.74 × 16,429.78
  4. Step 4: Simplify right side
    28,367.16x = 643,073,747.24
  5. Step 5: Solve for x
    x = 643,073,747.24/28,367.16
  6. Step 6: Final answer
    x = 22,669.66

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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.