Home / 13,411.53-20,117.30-4,178.25

Finding the Fourth Proportional to 13,411.53, 20,117.30 and 4,178.25

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Solution

The fourth proportional to 13,411.53, 20,117.30 and 4,178.25 is: 6,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.53 : 20,117.30 = 4,178.25 : x
  2. Step 2: Convert to fraction form
    13,411.53/20,117.30 = 4,178.25/x
  3. Step 3: Cross multiply
    13,411.53x = 20,117.30 × 4,178.25
  4. Step 4: Simplify right side
    13,411.53x = 84,055,087.83
  5. Step 5: Solve for x
    x = 84,055,087.83/13,411.53
  6. Step 6: Final answer
    x = 6,267.38

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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.