Home / 13,363.68-18,439.80-7,698.66

Finding the Fourth Proportional to 13,363.68, 18,439.80 and 7,698.66

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Solution

The fourth proportional to 13,363.68, 18,439.80 and 7,698.66 is: 10,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.68 : 18,439.80 = 7,698.66 : x
  2. Step 2: Convert to fraction form
    13,363.68/18,439.80 = 7,698.66/x
  3. Step 3: Cross multiply
    13,363.68x = 18,439.80 × 7,698.66
  4. Step 4: Simplify right side
    13,363.68x = 141,961,750.67
  5. Step 5: Solve for x
    x = 141,961,750.67/13,363.68
  6. Step 6: Final answer
    x = 10,622.95

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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.