Home / 22,430.40-30,729.80-21,589.62

Finding the Fourth Proportional to 22,430.40, 30,729.80 and 21,589.62

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Solution

The fourth proportional to 22,430.40, 30,729.80 and 21,589.62 is: 29,577.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,430.40 : 30,729.80 = 21,589.62 : x
  2. Step 2: Convert to fraction form
    22,430.40/30,729.80 = 21,589.62/x
  3. Step 3: Cross multiply
    22,430.40x = 30,729.80 × 21,589.62
  4. Step 4: Simplify right side
    22,430.40x = 663,444,704.68
  5. Step 5: Solve for x
    x = 663,444,704.68/22,430.40
  6. Step 6: Final answer
    x = 29,577.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.