Home / 13,340.34-18,409.59-7,372.35

Finding the Fourth Proportional to 13,340.34, 18,409.59 and 7,372.35

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Solution

The fourth proportional to 13,340.34, 18,409.59 and 7,372.35 is: 10,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.34 : 18,409.59 = 7,372.35 : x
  2. Step 2: Convert to fraction form
    13,340.34/18,409.59 = 7,372.35/x
  3. Step 3: Cross multiply
    13,340.34x = 18,409.59 × 7,372.35
  4. Step 4: Simplify right side
    13,340.34x = 135,721,940.84
  5. Step 5: Solve for x
    x = 135,721,940.84/13,340.34
  6. Step 6: Final answer
    x = 10,173.80

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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.