Home / 20,656.64-28,507.31-11,707.03

Finding the Fourth Proportional to 20,656.64, 28,507.31 and 11,707.03

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Solution

The fourth proportional to 20,656.64, 28,507.31 and 11,707.03 is: 16,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.64 : 28,507.31 = 11,707.03 : x
  2. Step 2: Convert to fraction form
    20,656.64/28,507.31 = 11,707.03/x
  3. Step 3: Cross multiply
    20,656.64x = 28,507.31 × 11,707.03
  4. Step 4: Simplify right side
    20,656.64x = 333,735,891.39
  5. Step 5: Solve for x
    x = 333,735,891.39/20,656.64
  6. Step 6: Final answer
    x = 16,156.35

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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.