Home / 20,716.36-28,594.04-12,765.24

Finding the Fourth Proportional to 20,716.36, 28,594.04 and 12,765.24

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Solution

The fourth proportional to 20,716.36, 28,594.04 and 12,765.24 is: 17,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.36 : 28,594.04 = 12,765.24 : x
  2. Step 2: Convert to fraction form
    20,716.36/28,594.04 = 12,765.24/x
  3. Step 3: Cross multiply
    20,716.36x = 28,594.04 × 12,765.24
  4. Step 4: Simplify right side
    20,716.36x = 365,009,783.17
  5. Step 5: Solve for x
    x = 365,009,783.17/20,716.36
  6. Step 6: Final answer
    x = 17,619.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.