Home / 28,243.89-42,364.77-8,521.92

Finding the Fourth Proportional to 28,243.89, 42,364.77 and 8,521.92

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Solution

The fourth proportional to 28,243.89, 42,364.77 and 8,521.92 is: 12,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.89 : 42,364.77 = 8,521.92 : x
  2. Step 2: Convert to fraction form
    28,243.89/42,364.77 = 8,521.92/x
  3. Step 3: Cross multiply
    28,243.89x = 42,364.77 × 8,521.92
  4. Step 4: Simplify right side
    28,243.89x = 361,029,180.76
  5. Step 5: Solve for x
    x = 361,029,180.76/28,243.89
  6. Step 6: Final answer
    x = 12,782.56

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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.