Home / 30,865.20-46,265.40-17,689.20

Finding the Fourth Proportional to 30,865.20, 46,265.40 and 17,689.20

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Solution

The fourth proportional to 30,865.20, 46,265.40 and 17,689.20 is: 26,515.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,865.20 : 46,265.40 = 17,689.20 : x
  2. Step 2: Convert to fraction form
    30,865.20/46,265.40 = 17,689.20/x
  3. Step 3: Cross multiply
    30,865.20x = 46,265.40 × 17,689.20
  4. Step 4: Simplify right side
    30,865.20x = 818,397,913.68
  5. Step 5: Solve for x
    x = 818,397,913.68/30,865.20
  6. Step 6: Final answer
    x = 26,515.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.