Home / 30,537.99-42,137.49-18,605.07

Finding the Fourth Proportional to 30,537.99, 42,137.49 and 18,605.07

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Solution

The fourth proportional to 30,537.99, 42,137.49 and 18,605.07 is: 25,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,537.99 : 42,137.49 = 18,605.07 : x
  2. Step 2: Convert to fraction form
    30,537.99/42,137.49 = 18,605.07/x
  3. Step 3: Cross multiply
    30,537.99x = 42,137.49 × 18,605.07
  4. Step 4: Simplify right side
    30,537.99x = 783,970,951.07
  5. Step 5: Solve for x
    x = 783,970,951.07/30,537.99
  6. Step 6: Final answer
    x = 25,671.99

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Double scale
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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.