Home / 31,368.96-43,290.72-18,622.80

Finding the Fourth Proportional to 31,368.96, 43,290.72 and 18,622.80

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Solution

The fourth proportional to 31,368.96, 43,290.72 and 18,622.80 is: 25,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.96 : 43,290.72 = 18,622.80 : x
  2. Step 2: Convert to fraction form
    31,368.96/43,290.72 = 18,622.80/x
  3. Step 3: Cross multiply
    31,368.96x = 43,290.72 × 18,622.80
  4. Step 4: Simplify right side
    31,368.96x = 806,194,420.42
  5. Step 5: Solve for x
    x = 806,194,420.42/31,368.96
  6. Step 6: Final answer
    x = 25,700.39

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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.