Home / 13,875.30-20,814.32-5,108.16

Finding the Fourth Proportional to 13,875.30, 20,814.32 and 5,108.16

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Solution

The fourth proportional to 13,875.30, 20,814.32 and 5,108.16 is: 7,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.30 : 20,814.32 = 5,108.16 : x
  2. Step 2: Convert to fraction form
    13,875.30/20,814.32 = 5,108.16/x
  3. Step 3: Cross multiply
    13,875.30x = 20,814.32 × 5,108.16
  4. Step 4: Simplify right side
    13,875.30x = 106,322,938.94
  5. Step 5: Solve for x
    x = 106,322,938.94/13,875.30
  6. Step 6: Final answer
    x = 7,662.75

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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.