Home / 28,209.90-42,314.76-8,488.43

Finding the Fourth Proportional to 28,209.90, 42,314.76 and 8,488.43

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Solution

The fourth proportional to 28,209.90, 42,314.76 and 8,488.43 is: 12,732.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.90 : 42,314.76 = 8,488.43 : x
  2. Step 2: Convert to fraction form
    28,209.90/42,314.76 = 8,488.43/x
  3. Step 3: Cross multiply
    28,209.90x = 42,314.76 × 8,488.43
  4. Step 4: Simplify right side
    28,209.90x = 359,185,878.23
  5. Step 5: Solve for x
    x = 359,185,878.23/28,209.90
  6. Step 6: Final answer
    x = 12,732.62

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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.