Home / 30,980.36-42,753.06-18,234.02

Finding the Fourth Proportional to 30,980.36, 42,753.06 and 18,234.02

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Solution

The fourth proportional to 30,980.36, 42,753.06 and 18,234.02 is: 25,163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,980.36 : 42,753.06 = 18,234.02 : x
  2. Step 2: Convert to fraction form
    30,980.36/42,753.06 = 18,234.02/x
  3. Step 3: Cross multiply
    30,980.36x = 42,753.06 × 18,234.02
  4. Step 4: Simplify right side
    30,980.36x = 779,559,937.34
  5. Step 5: Solve for x
    x = 779,559,937.34/30,980.36
  6. Step 6: Final answer
    x = 25,163.04

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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.