Home / 30,515.50-42,164.04-25,201.18

Finding the Fourth Proportional to 30,515.50, 42,164.04 and 25,201.18

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Solution

The fourth proportional to 30,515.50, 42,164.04 and 25,201.18 is: 34,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.50 : 42,164.04 = 25,201.18 : x
  2. Step 2: Convert to fraction form
    30,515.50/42,164.04 = 25,201.18/x
  3. Step 3: Cross multiply
    30,515.50x = 42,164.04 × 25,201.18
  4. Step 4: Simplify right side
    30,515.50x = 1,062,583,561.57
  5. Step 5: Solve for x
    x = 1,062,583,561.57/30,515.50
  6. Step 6: Final answer
    x = 34,821.11

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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.