Home / 30,585.20-42,209.26-17,160.72

Finding the Fourth Proportional to 30,585.20, 42,209.26 and 17,160.72

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Solution

The fourth proportional to 30,585.20, 42,209.26 and 17,160.72 is: 23,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.20 : 42,209.26 = 17,160.72 : x
  2. Step 2: Convert to fraction form
    30,585.20/42,209.26 = 17,160.72/x
  3. Step 3: Cross multiply
    30,585.20x = 42,209.26 × 17,160.72
  4. Step 4: Simplify right side
    30,585.20x = 724,341,292.27
  5. Step 5: Solve for x
    x = 724,341,292.27/30,585.20
  6. Step 6: Final answer
    x = 23,682.74

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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.