Home / 28,776.58-39,711.75-16,679.40

Finding the Fourth Proportional to 28,776.58, 39,711.75 and 16,679.40

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Solution

The fourth proportional to 28,776.58, 39,711.75 and 16,679.40 is: 23,017.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.58 : 39,711.75 = 16,679.40 : x
  2. Step 2: Convert to fraction form
    28,776.58/39,711.75 = 16,679.40/x
  3. Step 3: Cross multiply
    28,776.58x = 39,711.75 × 16,679.40
  4. Step 4: Simplify right side
    28,776.58x = 662,367,951.48
  5. Step 5: Solve for x
    x = 662,367,951.48/28,776.58
  6. Step 6: Final answer
    x = 23,017.61

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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.