Home / 30,696.49-42,358.20-18,771.87

Finding the Fourth Proportional to 30,696.49, 42,358.20 and 18,771.87

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Solution

The fourth proportional to 30,696.49, 42,358.20 and 18,771.87 is: 25,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696.49 : 42,358.20 = 18,771.87 : x
  2. Step 2: Convert to fraction form
    30,696.49/42,358.20 = 18,771.87/x
  3. Step 3: Cross multiply
    30,696.49x = 42,358.20 × 18,771.87
  4. Step 4: Simplify right side
    30,696.49x = 795,142,623.83
  5. Step 5: Solve for x
    x = 795,142,623.83/30,696.49
  6. Step 6: Final answer
    x = 25,903.37

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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.