Home / 13,955.60-20,933.40-5,188.70

Finding the Fourth Proportional to 13,955.60, 20,933.40 and 5,188.70

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Solution

The fourth proportional to 13,955.60, 20,933.40 and 5,188.70 is: 7,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.60 : 20,933.40 = 5,188.70 : x
  2. Step 2: Convert to fraction form
    13,955.60/20,933.40 = 5,188.70/x
  3. Step 3: Cross multiply
    13,955.60x = 20,933.40 × 5,188.70
  4. Step 4: Simplify right side
    13,955.60x = 108,617,132.58
  5. Step 5: Solve for x
    x = 108,617,132.58/13,955.60
  6. Step 6: Final answer
    x = 7,783.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.