Home / 13,409.60-18,505.36-7,441.68

Finding the Fourth Proportional to 13,409.60, 18,505.36 and 7,441.68

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Solution

The fourth proportional to 13,409.60, 18,505.36 and 7,441.68 is: 10,269.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.60 : 18,505.36 = 7,441.68 : x
  2. Step 2: Convert to fraction form
    13,409.60/18,505.36 = 7,441.68/x
  3. Step 3: Cross multiply
    13,409.60x = 18,505.36 × 7,441.68
  4. Step 4: Simplify right side
    13,409.60x = 137,710,967.40
  5. Step 5: Solve for x
    x = 137,710,967.40/13,409.60
  6. Step 6: Final answer
    x = 10,269.58

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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.