Home / 30,537.98-42,137.51-18,605.06

Finding the Fourth Proportional to 30,537.98, 42,137.51 and 18,605.06

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Solution

The fourth proportional to 30,537.98, 42,137.51 and 18,605.06 is: 25,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,537.98 : 42,137.51 = 18,605.06 : x
  2. Step 2: Convert to fraction form
    30,537.98/42,137.51 = 18,605.06/x
  3. Step 3: Cross multiply
    30,537.98x = 42,137.51 × 18,605.06
  4. Step 4: Simplify right side
    30,537.98x = 783,970,598.09
  5. Step 5: Solve for x
    x = 783,970,598.09/30,537.98
  6. Step 6: Final answer
    x = 25,671.99

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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.