Home / 10,520.97-15,783.61-3,124.77

Finding the Fourth Proportional to 10,520.97, 15,783.61 and 3,124.77

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Solution

The fourth proportional to 10,520.97, 15,783.61 and 3,124.77 is: 4,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.97 : 15,783.61 = 3,124.77 : x
  2. Step 2: Convert to fraction form
    10,520.97/15,783.61 = 3,124.77/x
  3. Step 3: Cross multiply
    10,520.97x = 15,783.61 × 3,124.77
  4. Step 4: Simplify right side
    10,520.97x = 49,320,151.02
  5. Step 5: Solve for x
    x = 49,320,151.02/10,520.97
  6. Step 6: Final answer
    x = 4,687.80

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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.