Home / 28,600.20-42,893.46-9,880.90

Finding the Fourth Proportional to 28,600.20, 42,893.46 and 9,880.90

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Solution

The fourth proportional to 28,600.20, 42,893.46 and 9,880.90 is: 14,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.20 : 42,893.46 = 9,880.90 : x
  2. Step 2: Convert to fraction form
    28,600.20/42,893.46 = 9,880.90/x
  3. Step 3: Cross multiply
    28,600.20x = 42,893.46 × 9,880.90
  4. Step 4: Simplify right side
    28,600.20x = 423,825,988.91
  5. Step 5: Solve for x
    x = 423,825,988.91/28,600.20
  6. Step 6: Final answer
    x = 14,818.99

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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.