Home / 30,585.35-42,208.19-17,155.80

Finding the Fourth Proportional to 30,585.35, 42,208.19 and 17,155.80

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Solution

The fourth proportional to 30,585.35, 42,208.19 and 17,155.80 is: 23,675.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.35 : 42,208.19 = 17,155.80 : x
  2. Step 2: Convert to fraction form
    30,585.35/42,208.19 = 17,155.80/x
  3. Step 3: Cross multiply
    30,585.35x = 42,208.19 × 17,155.80
  4. Step 4: Simplify right side
    30,585.35x = 724,115,244.56
  5. Step 5: Solve for x
    x = 724,115,244.56/30,585.35
  6. Step 6: Final answer
    x = 23,675.23

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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.