Home / 13,346.28-19,991.70-7,782.75

Finding the Fourth Proportional to 13,346.28, 19,991.70 and 7,782.75

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Solution

The fourth proportional to 13,346.28, 19,991.70 and 7,782.75 is: 11,657.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.28 : 19,991.70 = 7,782.75 : x
  2. Step 2: Convert to fraction form
    13,346.28/19,991.70 = 7,782.75/x
  3. Step 3: Cross multiply
    13,346.28x = 19,991.70 × 7,782.75
  4. Step 4: Simplify right side
    13,346.28x = 155,590,403.18
  5. Step 5: Solve for x
    x = 155,590,403.18/13,346.28
  6. Step 6: Final answer
    x = 11,657.96

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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.