Home / 13,219.11-18,241.02-7,913.79

Finding the Fourth Proportional to 13,219.11, 18,241.02 and 7,913.79

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Solution

The fourth proportional to 13,219.11, 18,241.02 and 7,913.79 is: 10,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.11 : 18,241.02 = 7,913.79 : x
  2. Step 2: Convert to fraction form
    13,219.11/18,241.02 = 7,913.79/x
  3. Step 3: Cross multiply
    13,219.11x = 18,241.02 × 7,913.79
  4. Step 4: Simplify right side
    13,219.11x = 144,355,601.67
  5. Step 5: Solve for x
    x = 144,355,601.67/13,219.11
  6. Step 6: Final answer
    x = 10,920.22

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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.