Home / 15,056.86-20,776.76-8,340.78

Finding the Fourth Proportional to 15,056.86, 20,776.76 and 8,340.78

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Solution

The fourth proportional to 15,056.86, 20,776.76 and 8,340.78 is: 11,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.86 : 20,776.76 = 8,340.78 : x
  2. Step 2: Convert to fraction form
    15,056.86/20,776.76 = 8,340.78/x
  3. Step 3: Cross multiply
    15,056.86x = 20,776.76 × 8,340.78
  4. Step 4: Simplify right side
    15,056.86x = 173,294,384.27
  5. Step 5: Solve for x
    x = 173,294,384.27/15,056.86
  6. Step 6: Final answer
    x = 11,509.33

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Half scale
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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.