Home / 13,929.12-20,892.80-6,535.20

Finding the Fourth Proportional to 13,929.12, 20,892.80 and 6,535.20

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Solution

The fourth proportional to 13,929.12, 20,892.80 and 6,535.20 is: 9,802.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.12 : 20,892.80 = 6,535.20 : x
  2. Step 2: Convert to fraction form
    13,929.12/20,892.80 = 6,535.20/x
  3. Step 3: Cross multiply
    13,929.12x = 20,892.80 × 6,535.20
  4. Step 4: Simplify right side
    13,929.12x = 136,538,626.56
  5. Step 5: Solve for x
    x = 136,538,626.56/13,929.12
  6. Step 6: Final answer
    x = 9,802.39

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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.