Home / 13,821.59-19,073.23-7,771.66

Finding the Fourth Proportional to 13,821.59, 19,073.23 and 7,771.66

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Solution

The fourth proportional to 13,821.59, 19,073.23 and 7,771.66 is: 10,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.59 : 19,073.23 = 7,771.66 : x
  2. Step 2: Convert to fraction form
    13,821.59/19,073.23 = 7,771.66/x
  3. Step 3: Cross multiply
    13,821.59x = 19,073.23 × 7,771.66
  4. Step 4: Simplify right side
    13,821.59x = 148,230,591.55
  5. Step 5: Solve for x
    x = 148,230,591.55/13,821.59
  6. Step 6: Final answer
    x = 10,724.57

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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.