Home / 20,703.18-28,583.37-13,641.60

Finding the Fourth Proportional to 20,703.18, 28,583.37 and 13,641.60

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Solution

The fourth proportional to 20,703.18, 28,583.37 and 13,641.60 is: 18,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.18 : 28,583.37 = 13,641.60 : x
  2. Step 2: Convert to fraction form
    20,703.18/28,583.37 = 13,641.60/x
  3. Step 3: Cross multiply
    20,703.18x = 28,583.37 × 13,641.60
  4. Step 4: Simplify right side
    20,703.18x = 389,922,900.19
  5. Step 5: Solve for x
    x = 389,922,900.19/20,703.18
  6. Step 6: Final answer
    x = 18,833.96

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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.