Home / 20,657.66-28,504.05-11,703.32

Finding the Fourth Proportional to 20,657.66, 28,504.05 and 11,703.32

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Solution

The fourth proportional to 20,657.66, 28,504.05 and 11,703.32 is: 16,148.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.66 : 28,504.05 = 11,703.32 : x
  2. Step 2: Convert to fraction form
    20,657.66/28,504.05 = 11,703.32/x
  3. Step 3: Cross multiply
    20,657.66x = 28,504.05 × 11,703.32
  4. Step 4: Simplify right side
    20,657.66x = 333,591,875.93
  5. Step 5: Solve for x
    x = 333,591,875.93/20,657.66
  6. Step 6: Final answer
    x = 16,148.58

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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.