Home / 20,659.66-28,506.80-11,705.32

Finding the Fourth Proportional to 20,659.66, 28,506.80 and 11,705.32

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Solution

The fourth proportional to 20,659.66, 28,506.80 and 11,705.32 is: 16,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.66 : 28,506.80 = 11,705.32 : x
  2. Step 2: Convert to fraction form
    20,659.66/28,506.80 = 11,705.32/x
  3. Step 3: Cross multiply
    20,659.66x = 28,506.80 × 11,705.32
  4. Step 4: Simplify right side
    20,659.66x = 333,681,216.18
  5. Step 5: Solve for x
    x = 333,681,216.18/20,659.66
  6. Step 6: Final answer
    x = 16,151.34

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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.