Home / 13,320.86-19,981.28-4,555.85

Finding the Fourth Proportional to 13,320.86, 19,981.28 and 4,555.85

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Solution

The fourth proportional to 13,320.86, 19,981.28 and 4,555.85 is: 6,833.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.86 : 19,981.28 = 4,555.85 : x
  2. Step 2: Convert to fraction form
    13,320.86/19,981.28 = 4,555.85/x
  3. Step 3: Cross multiply
    13,320.86x = 19,981.28 × 4,555.85
  4. Step 4: Simplify right side
    13,320.86x = 91,031,625.97
  5. Step 5: Solve for x
    x = 91,031,625.97/13,320.86
  6. Step 6: Final answer
    x = 6,833.77

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Similar ratio
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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.