Home / 30,697.74-42,359.92-18,773.12

Finding the Fourth Proportional to 30,697.74, 42,359.92 and 18,773.12

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Solution

The fourth proportional to 30,697.74, 42,359.92 and 18,773.12 is: 25,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.74 : 42,359.92 = 18,773.12 : x
  2. Step 2: Convert to fraction form
    30,697.74/42,359.92 = 18,773.12/x
  3. Step 3: Cross multiply
    30,697.74x = 42,359.92 × 18,773.12
  4. Step 4: Simplify right side
    30,697.74x = 795,227,920.32
  5. Step 5: Solve for x
    x = 795,227,920.32/30,697.74
  6. Step 6: Final answer
    x = 25,905.10

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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.