Home / 13,338.84-18,409.98-7,961.66

Finding the Fourth Proportional to 13,338.84, 18,409.98 and 7,961.66

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Solution

The fourth proportional to 13,338.84, 18,409.98 and 7,961.66 is: 10,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.84 : 18,409.98 = 7,961.66 : x
  2. Step 2: Convert to fraction form
    13,338.84/18,409.98 = 7,961.66/x
  3. Step 3: Cross multiply
    13,338.84x = 18,409.98 × 7,961.66
  4. Step 4: Simplify right side
    13,338.84x = 146,573,909.32
  5. Step 5: Solve for x
    x = 146,573,909.32/13,338.84
  6. Step 6: Final answer
    x = 10,988.50

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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.