Home / 13,340.59-18,409.85-7,372.13

Finding the Fourth Proportional to 13,340.59, 18,409.85 and 7,372.13

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Solution

The fourth proportional to 13,340.59, 18,409.85 and 7,372.13 is: 10,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.59 : 18,409.85 = 7,372.13 : x
  2. Step 2: Convert to fraction form
    13,340.59/18,409.85 = 7,372.13/x
  3. Step 3: Cross multiply
    13,340.59x = 18,409.85 × 7,372.13
  4. Step 4: Simplify right side
    13,340.59x = 135,719,809.77
  5. Step 5: Solve for x
    x = 135,719,809.77/13,340.59
  6. Step 6: Final answer
    x = 10,173.45

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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.