Home / 14,287.60-21,557.07-13,796.72

Finding the Fourth Proportional to 14,287.60, 21,557.07 and 13,796.72

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Solution

The fourth proportional to 14,287.60, 21,557.07 and 13,796.72 is: 20,816.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.60 : 21,557.07 = 13,796.72 : x
  2. Step 2: Convert to fraction form
    14,287.60/21,557.07 = 13,796.72/x
  3. Step 3: Cross multiply
    14,287.60x = 21,557.07 × 13,796.72
  4. Step 4: Simplify right side
    14,287.60x = 297,416,858.81
  5. Step 5: Solve for x
    x = 297,416,858.81/14,287.60
  6. Step 6: Final answer
    x = 20,816.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.