Home / 30,680.10-42,217.16-25,628.12

Finding the Fourth Proportional to 30,680.10, 42,217.16 and 25,628.12

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Solution

The fourth proportional to 30,680.10, 42,217.16 and 25,628.12 is: 35,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.10 : 42,217.16 = 25,628.12 : x
  2. Step 2: Convert to fraction form
    30,680.10/42,217.16 = 25,628.12/x
  3. Step 3: Cross multiply
    30,680.10x = 42,217.16 × 25,628.12
  4. Step 4: Simplify right side
    30,680.10x = 1,081,946,442.54
  5. Step 5: Solve for x
    x = 1,081,946,442.54/30,680.10
  6. Step 6: Final answer
    x = 35,265.41

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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.