Home / 13,385.64-20,090.93-6,816.77

Finding the Fourth Proportional to 13,385.64, 20,090.93 and 6,816.77

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Solution

The fourth proportional to 13,385.64, 20,090.93 and 6,816.77 is: 10,231.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.64 : 20,090.93 = 6,816.77 : x
  2. Step 2: Convert to fraction form
    13,385.64/20,090.93 = 6,816.77/x
  3. Step 3: Cross multiply
    13,385.64x = 20,090.93 × 6,816.77
  4. Step 4: Simplify right side
    13,385.64x = 136,955,114.36
  5. Step 5: Solve for x
    x = 136,955,114.36/13,385.64
  6. Step 6: Final answer
    x = 10,231.50

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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.