Home / 31,623.80-43,646.98-20,307.60

Finding the Fourth Proportional to 31,623.80, 43,646.98 and 20,307.60

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Solution

The fourth proportional to 31,623.80, 43,646.98 and 20,307.60 is: 28,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,623.80 : 43,646.98 = 20,307.60 : x
  2. Step 2: Convert to fraction form
    31,623.80/43,646.98 = 20,307.60/x
  3. Step 3: Cross multiply
    31,623.80x = 43,646.98 × 20,307.60
  4. Step 4: Simplify right side
    31,623.80x = 886,365,411.05
  5. Step 5: Solve for x
    x = 886,365,411.05/31,623.80
  6. Step 6: Final answer
    x = 28,028.43

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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.